<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2021 Workiva-->
<!--r:bd356f68-6ed4-4118-ba4c-7e4c573a6fd1,g:8ab4be26-fde4-470e-bb78-ba0acf7829bd-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:wern="http://www.werner.com/20201231" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.werner.com/20201231">
  <xs:import namespace="http://fasb.org/srt/2020-01-31" schemaLocation="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2020-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd"/>
  <xs:import namespace="http://www.w3.org/1999/xlink" schemaLocation="http://www.xbrl.org/2003/xlink-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd"/>
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/country/2020-01-31" schemaLocation="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2020-01-31" schemaLocation="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="wern-20201231_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="wern-20201231_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="wern-20201231_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="wern-20201231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="DocumentandEntityInformation" roleURI="http://www.werner.com/role/DocumentandEntityInformation">
        <link:definition>0001001 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofIncome" roleURI="http://www.werner.com/role/ConsolidatedStatementsofIncome">
        <link:definition>1001002 - Statement - Consolidated Statements of Income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofComprehensiveIncome" roleURI="http://www.werner.com/role/ConsolidatedStatementsofComprehensiveIncome">
        <link:definition>1002003 - Statement - Consolidated Statements of Comprehensive Income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheets" roleURI="http://www.werner.com/role/ConsolidatedBalanceSheets">
        <link:definition>1003004 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheetsParenthetical" roleURI="http://www.werner.com/role/ConsolidatedBalanceSheetsParenthetical">
        <link:definition>1004005 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofCashFlows" roleURI="http://www.werner.com/role/ConsolidatedStatementsofCashFlows">
        <link:definition>1005006 - Statement - Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofStockholdersEquity" roleURI="http://www.werner.com/role/ConsolidatedStatementsofStockholdersEquity">
        <link:definition>1006007 - Statement - Consolidated Statements of Stockholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofStockholdersEquityParenthetical" roleURI="http://www.werner.com/role/ConsolidatedStatementsofStockholdersEquityParenthetical">
        <link:definition>1007008 - Statement - Consolidated Statements of Stockholders' Equity (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPolicies" roleURI="http://www.werner.com/role/SummaryofSignificantAccountingPolicies">
        <link:definition>2101101 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesPolicies" roleURI="http://www.werner.com/role/SummaryofSignificantAccountingPoliciesPolicies">
        <link:definition>2202201 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPolicesTables" roleURI="http://www.werner.com/role/SummaryofSignificantAccountingPolicesTables">
        <link:definition>2303301 - Disclosure - Summary of Significant Accounting Polices (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountingPoliciesSummaryofSignificantAccountingPoliciesDetails" roleURI="http://www.werner.com/role/AccountingPoliciesSummaryofSignificantAccountingPoliciesDetails">
        <link:definition>2404401 - Disclosure - Accounting Policies Summary of Significant Accounting Policies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesScheduleofEstimatedUsefulLifeDetails" roleURI="http://www.werner.com/role/SummaryofSignificantAccountingPoliciesScheduleofEstimatedUsefulLifeDetails">
        <link:definition>2405402 - Disclosure - Summary of Significant Accounting Policies (Schedule of Estimated Useful Life) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesSelfInsuranceRetentionLiabilityDetails" roleURI="http://www.werner.com/role/SummaryofSignificantAccountingPoliciesSelfInsuranceRetentionLiabilityDetails">
        <link:definition>2406403 - Disclosure - Summary of Significant Accounting Policies (Self Insurance Retention Liability) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesScheduleOfBasicandDilutedEarningsPerShareDetails" roleURI="http://www.werner.com/role/SummaryofSignificantAccountingPoliciesScheduleOfBasicandDilutedEarningsPerShareDetails">
        <link:definition>2407404 - Disclosure - Summary of Significant Accounting Policies (Schedule Of Basic and Diluted Earnings Per Share) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesScheduleofEffectsofChangeinAccountingEstimateDetails" roleURI="http://www.werner.com/role/SummaryofSignificantAccountingPoliciesScheduleofEffectsofChangeinAccountingEstimateDetails">
        <link:definition>2408405 - Disclosure - Summary of Significant Accounting Policies (Schedule of Effects of Change in Accounting Estimate) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesEffectsofNewAccountingPronouncementsDetails" roleURI="http://www.werner.com/role/SummaryofSignificantAccountingPoliciesEffectsofNewAccountingPronouncementsDetails">
        <link:definition>2409406 - Disclosure - Summary of Significant Accounting Policies (Effects of New Accounting Pronouncements) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Revenue" roleURI="http://www.werner.com/role/Revenue">
        <link:definition>2110102 - Disclosure - Revenue</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueTables" roleURI="http://www.werner.com/role/RevenueTables">
        <link:definition>2311302 - Disclosure - Revenue (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueNarrativeDetails" roleURI="http://www.werner.com/role/RevenueNarrativeDetails">
        <link:definition>2412407 - Disclosure - Revenue Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueDisaggregationofRevenuebyRevenueSourceDetails" roleURI="http://www.werner.com/role/RevenueDisaggregationofRevenuebyRevenueSourceDetails">
        <link:definition>2413408 - Disclosure - Revenue (Disaggregation of Revenue by Revenue Source) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueDisaggregationofRevenuebyGeographicalAreasDetails" roleURI="http://www.werner.com/role/RevenueDisaggregationofRevenuebyGeographicalAreasDetails">
        <link:definition>2414409 - Disclosure - Revenue (Disaggregation of Revenue by Geographical Areas) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Leases" roleURI="http://www.werner.com/role/Leases">
        <link:definition>2115103 - Disclosure - Leases</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesTables" roleURI="http://www.werner.com/role/LeasesTables">
        <link:definition>2316303 - Disclosure - Leases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesNarrativeDetails" roleURI="http://www.werner.com/role/LeasesNarrativeDetails">
        <link:definition>2417410 - Disclosure - Leases (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesScheduleofOperatingLeaseInformationDetails" roleURI="http://www.werner.com/role/LeasesScheduleofOperatingLeaseInformationDetails">
        <link:definition>2418411 - Disclosure - Leases (Schedule of Operating Lease Information) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesScheduleofLessorOperatingLeaseMaturitiesDetails" roleURI="http://www.werner.com/role/LeasesScheduleofLessorOperatingLeaseMaturitiesDetails">
        <link:definition>2419412 - Disclosure - Leases (Schedule of Lessor Operating Lease Maturities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Investments" roleURI="http://www.werner.com/role/Investments">
        <link:definition>2120104 - Disclosure - Investments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InvestmentsDetails" roleURI="http://www.werner.com/role/InvestmentsDetails">
        <link:definition>2421413 - Disclosure - Investments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CreditFacilities" roleURI="http://www.werner.com/role/CreditFacilities">
        <link:definition>2122105 - Disclosure - Credit Facilities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CreditFacilitiesTables" roleURI="http://www.werner.com/role/CreditFacilitiesTables">
        <link:definition>2323304 - Disclosure - Credit Facilities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CreditFacilitiesNarrativeDetails" roleURI="http://www.werner.com/role/CreditFacilitiesNarrativeDetails">
        <link:definition>2424414 - Disclosure - Credit Facilities (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CreditFacilitiesDetails" roleURI="http://www.werner.com/role/CreditFacilitiesDetails">
        <link:definition>2425415 - Disclosure - Credit Facilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NotesReceivable" roleURI="http://www.werner.com/role/NotesReceivable">
        <link:definition>2126106 - Disclosure - Notes Receivable</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NotesReceivableTables" roleURI="http://www.werner.com/role/NotesReceivableTables">
        <link:definition>2327305 - Disclosure - Notes Receivable (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NotesReceivableDetails" roleURI="http://www.werner.com/role/NotesReceivableDetails">
        <link:definition>2428416 - Disclosure - Notes Receivable (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StudentNotesReceivableDetails" roleURI="http://www.werner.com/role/StudentNotesReceivableDetails">
        <link:definition>2429417 - Disclosure - Student Notes Receivable (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NotesReceivableDetails_1" roleURI="http://www.werner.com/role/NotesReceivableDetails_1">
        <link:definition>2430418 - Disclosure - Notes Receivable (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://www.werner.com/role/IncomeTaxes">
        <link:definition>2131107 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesTables" roleURI="http://www.werner.com/role/IncomeTaxesTables">
        <link:definition>2332306 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesDetails" roleURI="http://www.werner.com/role/IncomeTaxesDetails">
        <link:definition>2433419 - Disclosure - Income Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofIncomeTaxExpenseDetails" roleURI="http://www.werner.com/role/IncomeTaxesScheduleofIncomeTaxExpenseDetails">
        <link:definition>2434420 - Disclosure - Income Taxes (Schedule of Income Tax Expense) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofEffectiveIncomeTaxReconciliationDetails" roleURI="http://www.werner.com/role/IncomeTaxesScheduleofEffectiveIncomeTaxReconciliationDetails">
        <link:definition>2435421 - Disclosure - Income Taxes (Schedule of Effective Income Tax Reconciliation) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofDeferredTaxAssetsandLiabilitiesDetails" roleURI="http://www.werner.com/role/IncomeTaxesScheduleofDeferredTaxAssetsandLiabilitiesDetails">
        <link:definition>2436422 - Disclosure - Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofDeferredTaxAssetsandLiabilitiesDetails_1" roleURI="http://www.werner.com/role/IncomeTaxesScheduleofDeferredTaxAssetsandLiabilitiesDetails_1">
        <link:definition>2436422 - Disclosure - Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesReconciliationofUnrecognizedTaxBenefitsDetails" roleURI="http://www.werner.com/role/IncomeTaxesReconciliationofUnrecognizedTaxBenefitsDetails">
        <link:definition>2437423 - Disclosure - Income Taxes (Reconciliation of Unrecognized Tax Benefits) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeFinancialInstrument" roleURI="http://www.werner.com/role/DerivativeFinancialInstrument">
        <link:definition>2138108 - Disclosure - Derivative Financial Instrument</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeFinancialInstrumentsDetails" roleURI="http://www.werner.com/role/DerivativeFinancialInstrumentsDetails">
        <link:definition>2439424 - Disclosure - Derivative Financial Instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityCompensationandEmployeeBenefitPlans" roleURI="http://www.werner.com/role/EquityCompensationandEmployeeBenefitPlans">
        <link:definition>2140109 - Disclosure - Equity Compensation and Employee Benefit Plans</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityCompensationandEmployeeBenefitPlansTables" roleURI="http://www.werner.com/role/EquityCompensationandEmployeeBenefitPlansTables">
        <link:definition>2341307 - Disclosure - Equity Compensation and Employee Benefit Plans (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityCompensationandEmployeeBenefitPlansNarrativeDetails" roleURI="http://www.werner.com/role/EquityCompensationandEmployeeBenefitPlansNarrativeDetails">
        <link:definition>2442425 - Disclosure - Equity Compensation and Employee Benefit Plans (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityCompensationandEmployeeBenefitPlansEquityCompensationExpenseandRelatedIncomeTaxBenefitRecognizedDetails" roleURI="http://www.werner.com/role/EquityCompensationandEmployeeBenefitPlansEquityCompensationExpenseandRelatedIncomeTaxBenefitRecognizedDetails">
        <link:definition>2443426 - Disclosure - Equity Compensation and Employee Benefit Plans (Equity Compensation Expense and Related Income Tax Benefit Recognized) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityCompensationandEmployeeBenefitPlansScheduleofEquityCompensationRestrictedStockActivityDetails" roleURI="http://www.werner.com/role/EquityCompensationandEmployeeBenefitPlansScheduleofEquityCompensationRestrictedStockActivityDetails">
        <link:definition>2444427 - Disclosure - Equity Compensation and Employee Benefit Plans (Schedule of Equity Compensation Restricted Stock Activity) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityCompensationandEmployeeBenefitPlansScheduleofEquityCompensationRestrictedStockValuationAssumptionsDetails" roleURI="http://www.werner.com/role/EquityCompensationandEmployeeBenefitPlansScheduleofEquityCompensationRestrictedStockValuationAssumptionsDetails">
        <link:definition>2445428 - Disclosure - Equity Compensation and Employee Benefit Plans (Schedule of Equity Compensation Restricted Stock Valuation Assumptions) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityCompensationandEmployeeBenefitPlansScheduleofEquityCompensationPerformanceSharesActivityDetails" roleURI="http://www.werner.com/role/EquityCompensationandEmployeeBenefitPlansScheduleofEquityCompensationPerformanceSharesActivityDetails">
        <link:definition>2446429 - Disclosure - Equity Compensation and Employee Benefit Plans (Schedule of Equity Compensation Performance Shares Activity) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityCompensationandEmployeeBenefitPlansScheduleofEquityCompensationPerformanceSharesValuationAssumptionsDetails" roleURI="http://www.werner.com/role/EquityCompensationandEmployeeBenefitPlansScheduleofEquityCompensationPerformanceSharesValuationAssumptionsDetails">
        <link:definition>2447430 - Disclosure - Equity Compensation and Employee Benefit Plans (Schedule of Equity Compensation Performance Shares Valuation Assumptions) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityCompensationandEmployeeBenefitPlansContributionsforEmployeeStockPurchasePlanDetails" roleURI="http://www.werner.com/role/EquityCompensationandEmployeeBenefitPlansContributionsforEmployeeStockPurchasePlanDetails">
        <link:definition>2448431 - Disclosure - Equity Compensation and Employee Benefit Plans (Contributions for Employee Stock Purchase Plan) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityCompensationandEmployeeBenefitPlansContributionsandAdministrativeExpensesUnder401kRetirementSavingsPlanDetails" roleURI="http://www.werner.com/role/EquityCompensationandEmployeeBenefitPlansContributionsandAdministrativeExpensesUnder401kRetirementSavingsPlanDetails">
        <link:definition>2449432 - Disclosure - Equity Compensation and Employee Benefit Plans (Contributions and Administrative Expenses Under 401(k) Retirement Savings Plan) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityCompensationandEmployeeBenefitPlansAccumulatedBenefitObligationandAggregateMarketValueofLifeInsurancePoliciesDetails" roleURI="http://www.werner.com/role/EquityCompensationandEmployeeBenefitPlansAccumulatedBenefitObligationandAggregateMarketValueofLifeInsurancePoliciesDetails">
        <link:definition>2450433 - Disclosure - Equity Compensation and Employee Benefit Plans (Accumulated Benefit Obligation and Aggregate Market Value of Life Insurance Policies) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingencies" roleURI="http://www.werner.com/role/CommitmentsandContingencies">
        <link:definition>2151110 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingenciesDetails" roleURI="http://www.werner.com/role/CommitmentsandContingenciesDetails">
        <link:definition>2452434 - Disclosure - Commitments and Contingencies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RelatedPartyTransactions" roleURI="http://www.werner.com/role/RelatedPartyTransactions">
        <link:definition>2153111 - Disclosure - Related Party Transactions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RelatedPartyTransactionsDetails" roleURI="http://www.werner.com/role/RelatedPartyTransactionsDetails">
        <link:definition>2454435 - Disclosure - Related Party Transactions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformation" roleURI="http://www.werner.com/role/SegmentInformation">
        <link:definition>2155112 - Disclosure - Segment Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationTables" roleURI="http://www.werner.com/role/SegmentInformationTables">
        <link:definition>2356308 - Disclosure - Segment Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationNarrativesDetails" roleURI="http://www.werner.com/role/SegmentInformationNarrativesDetails">
        <link:definition>2457436 - Disclosure - Segment Information (Narratives) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationSummaryOfSegmentInformationDetails" roleURI="http://www.werner.com/role/SegmentInformationSummaryOfSegmentInformationDetails">
        <link:definition>2458437 - Disclosure - Segment Information (Summary Of Segment Information) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationScheduleOfRevenueAndLongLivedAssetsByGeographicalAreasDetails" roleURI="http://www.werner.com/role/SegmentInformationScheduleOfRevenueAndLongLivedAssetsByGeographicalAreasDetails">
        <link:definition>2459438 - Disclosure - Segment Information (Schedule Of Revenue And Long-Lived Assets, By Geographical Areas) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="QuarterlyResultsofOperations" roleURI="http://www.werner.com/role/QuarterlyResultsofOperations">
        <link:definition>2160113 - Disclosure - Quarterly Results of Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="QuarterlyResultsofOperationsTables" roleURI="http://www.werner.com/role/QuarterlyResultsofOperationsTables">
        <link:definition>2361309 - Disclosure - Quarterly Results of Operations (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="QuarterlyResultsofOperationsDetails" roleURI="http://www.werner.com/role/QuarterlyResultsofOperationsDetails">
        <link:definition>2462439 - Disclosure - Quarterly Results of Operations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ScheduleIIValuationandQualifyingAccounts" roleURI="http://www.werner.com/role/ScheduleIIValuationandQualifyingAccounts">
        <link:definition>2163114 - Disclosure - Schedule II - Valuation and Qualifying Accounts</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ScheduleIIValuationandQualifyingAccountsTables" roleURI="http://www.werner.com/role/ScheduleIIValuationandQualifyingAccountsTables">
        <link:definition>2364310 - Disclosure - Schedule II - Valuation and Qualifying Accounts (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ScheduleIIValuationandQualifyingAccountsDetails" roleURI="http://www.werner.com/role/ScheduleIIValuationandQualifyingAccountsDetails">
        <link:definition>2465440 - Disclosure - Schedule II - Valuation and Qualifying Accounts (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="wern_NumberOfParticipantsInExecutiveNonqualifiedExcessPlan" abstract="false" name="NumberOfParticipantsInExecutiveNonqualifiedExcessPlan" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="wern_DisaggregatedRevenuebyGeographicalAreasAbstract" abstract="true" name="DisaggregatedRevenuebyGeographicalAreasAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="wern_May172018VerdictMember" abstract="true" name="May172018VerdictMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_IncomeTaxContingencyPeriodOfStatuteOfLimitations" abstract="false" name="IncomeTaxContingencyPeriodOfStatuteOfLimitations" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="wern_Selfinsuranceretentionliabilityaggregate" abstract="false" name="Selfinsuranceretentionliabilityaggregate" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_RevenueEquipmentGross" abstract="false" name="RevenueEquipmentGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_OtherSegmentMember" abstract="true" name="OtherSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_InsuranceAndClaimsAccrualsPolicyTextBlock" abstract="false" name="InsuranceAndClaimsAccrualsPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="wern_PropertyAndEquipmentDisposedIncludedInOtherReceivables" abstract="false" name="PropertyAndEquipmentDisposedIncludedInOtherReceivables" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_RelatedPartyTransactionEquipmentSalesTotal" abstract="false" name="RelatedPartyTransactionEquipmentSalesTotal" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_PercentageOfInterestAccruesOnPurchasePlanContributions" abstract="false" name="PercentageOfInterestAccruesOnPurchasePlanContributions" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="wern_LossContingencyDamagesAwardedExpenses" abstract="false" name="LossContingencyDamagesAwardedExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_SelfInsuranceRetentionLiabilityAdditionalDeductible" abstract="false" name="SelfInsuranceRetentionLiabilityAdditionalDeductible" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_TotalAllCountriesMember" abstract="true" name="TotalAllCountriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_EquityCompensationArrangementbySharebasedPaymentAwardAwardVestingPercentageEarned" abstract="false" name="EquityCompensationArrangementbySharebasedPaymentAwardAwardVestingPercentageEarned" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="wern_EffectofNewAccountingPronouncements" abstract="false" name="EffectofNewAccountingPronouncements" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_CashFlowHedgeInterestRateSwapDetailsAbstract" abstract="true" name="CashFlowHedgeInterestRateSwapDetailsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="wern_TdrMember" abstract="true" name="TdrMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_Restrictedcashincludedinothercurrentassets" abstract="false" name="Restrictedcashincludedinothercurrentassets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_CorporateSegmentMember" abstract="true" name="CorporateSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_RelatedPartyTransactionPropertyPlantAndEquipmentPurchaseTotal" abstract="false" name="RelatedPartyTransactionPropertyPlantAndEquipmentPurchaseTotal" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_Accountsreceivablerecordedinvestmentpastduedays" abstract="false" name="Accountsreceivablerecordedinvestmentpastduedays" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="wern_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberofSharesAwardedPerEmployeePerYear" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberofSharesAwardedPerEmployeePerYear" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="wern_SelfInsuranceRetentionLiabilityAdditionalDeductibleApplicableRange" abstract="false" name="SelfInsuranceRetentionLiabilityAdditionalDeductibleApplicableRange" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_BMOHarrisBankN.A.LineofCreditFacilityMatureDateatMayFourteenTwoThousandandTwentyFourMember" abstract="true" name="BMOHarrisBankN.A.LineofCreditFacilityMatureDateatMayFourteenTwoThousandandTwentyFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_RelatedPartyTransactionsRecognizedNetGains" abstract="false" name="RelatedPartyTransactionsRecognizedNetGains" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_IndependentContractorsMember" abstract="true" name="IndependentContractorsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_RentAndPurchasedTransportation" abstract="false" name="RentAndPurchasedTransportation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendPaymentsPerShare" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendPaymentsPerShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:perShareItemType"/>
  <xs:element id="wern_WellsFargoBankN.A.LineofCreditFacilityMatureDateatMayFourteenTwoThousandandTwentyFourMember" abstract="true" name="WellsFargoBankN.A.LineofCreditFacilityMatureDateatMayFourteenTwoThousandandTwentyFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_TotalForeignCountriesMember" abstract="true" name="TotalForeignCountriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_ScheduleOfContributionsForEmployeeStockPurchasePlanTableTextBlock" abstract="false" name="ScheduleOfContributionsForEmployeeStockPurchasePlanTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="wern_TruckloadTransportationServicesSegmentMember" abstract="true" name="TruckloadTransportationServicesSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_LeaseholdImprovementstoLandTotalCostLessAccumulatedDepreciation" abstract="false" name="LeaseholdImprovementstoLandTotalCostLessAccumulatedDepreciation" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_TransportationServicesMember" abstract="true" name="TransportationServicesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_TractorsMember" abstract="true" name="TractorsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="wern_SelfinsuranceRetentionLiabilityLineItems" abstract="true" name="SelfinsuranceRetentionLiabilityLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="wern_EffectsofChangeinAccountingEstimateAbstract" abstract="true" name="EffectsofChangeinAccountingEstimateAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="wern_StateAndForeignTaxAuthoritiesMember" abstract="true" name="StateAndForeignTaxAuthoritiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_SelfInsuranceRetentionLiability" abstract="false" name="SelfInsuranceRetentionLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_RevenueFromMajorCustomersPercentage" abstract="false" name="RevenueFromMajorCustomersPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="wern_WorkersCompensationInsuranceCarrierMember" abstract="true" name="WorkersCompensationInsuranceCarrierMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_InsuranceCarriersLettersOfCreditMember" abstract="true" name="InsuranceCarriersLettersOfCreditMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_ScheduleOfValuationAndQualifyingAccountsTableTextBlock" abstract="false" name="ScheduleOfValuationAndQualifyingAccountsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="wern_PrepaidTaxesLicensesAndPermits" abstract="false" name="PrepaidTaxesLicensesAndPermits" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_LeaseAnnualRentPayments" abstract="false" name="LeaseAnnualRentPayments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_PercentageOfContributionToEmployeeStockPurchasePlan" abstract="false" name="PercentageOfContributionToEmployeeStockPurchasePlan" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="wern_IncomeTaxReconciliationChangeInEnactedTaxRate1" abstract="false" name="IncomeTaxReconciliationChangeInEnactedTaxRate1" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_MaximumAnnualStockPurchasePlanContributionsByPlanParticipants" abstract="false" name="MaximumAnnualStockPurchasePlanContributionsByPlanParticipants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_ServiceAndOtherEquipmentMember" abstract="true" name="ServiceAndOtherEquipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_ScheduleOfIncomeTaxAssetsAndLiabilitiesFinancialPositionTableTextBlock" abstract="false" name="ScheduleOfIncomeTaxAssetsAndLiabilitiesFinancialPositionTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="wern_AdditionalOutstandingDebtUnderCreditFacilitiesMember" abstract="true" name="AdditionalOutstandingDebtUnderCreditFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_OtherDebtorsMember" abstract="true" name="OtherDebtorsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_Averagetransittime" abstract="false" name="Averagetransittime" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="wern_LeaseholdImprovementstoLandTotalCost" abstract="false" name="LeaseholdImprovementstoLandTotalCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_StatutoryfederalincometaxrateDomain" abstract="true" name="StatutoryfederalincometaxrateDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_EmployeeBenefitsDomain" abstract="true" name="EmployeeBenefitsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_Wern_SelfInsuranceRetainedLiability" abstract="false" name="Wern_SelfInsuranceRetainedLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_StateOfNebraskaMember" abstract="true" name="StateOfNebraskaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_EmployeeBenefitsAxis" abstract="true" name="EmployeeBenefitsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="wern_OthersMember" abstract="true" name="OthersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_SelfInsuranceRetentionLiabilityAbstract" abstract="true" name="SelfInsuranceRetentionLiabilityAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="wern_ScheduleofRevenuebyReportingSegmentAbstract" abstract="true" name="ScheduleofRevenuebyReportingSegmentAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="wern_TrailersMember" abstract="true" name="TrailersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_ValueAddedServicesSegmentMember" abstract="true" name="ValueAddedServicesSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_WorkersCompensationInsuranceBonds" abstract="false" name="WorkersCompensationInsuranceBonds" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_SelfInsuranceRetentionWorkersCompensation" abstract="false" name="SelfInsuranceRetentionWorkersCompensation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_ScheduleofStudentNotesReceivableAbstract" abstract="true" name="ScheduleofStudentNotesReceivableAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="wern_EquityCompensationArrangementbySharebasedPaymentAwardPerformanceAwardsEarnedinPeriod" abstract="false" name="EquityCompensationArrangementbySharebasedPaymentAwardPerformanceAwardsEarnedinPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="wern_SelfinsuranceRetentionLiabilityTable" abstract="true" name="SelfinsuranceRetentionLiabilityTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="wern_StockIssuedDuringPeriodValueStockOptionsExercisedAndTaxEffect" abstract="false" name="StockIssuedDuringPeriodValueStockOptionsExercisedAndTaxEffect" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_ConsolidatedStatementsOfStockholdersEquityAbstract" abstract="true" name="ConsolidatedStatementsOfStockholdersEquityAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="wern_OtherrevenuerecognitionsegmentsMember" abstract="true" name="OtherrevenuerecognitionsegmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_SubtotalMember" abstract="true" name="SubtotalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="wern_IncreaseDecreaseInSelfInsuranceReservesNoncurrent" abstract="false" name="IncreaseDecreaseInSelfInsuranceReservesNoncurrent" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wern_ScheduleOfDeferredCompensationAssetsAndLiabilitiesTableTextBlock" abstract="false" name="ScheduleOfDeferredCompensationAssetsAndLiabilitiesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
</xs:schema>
