<SUBMISSION>
<ACCESSION-NUMBER>0001140361-06-017157
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20061127
<FILING-DATE>20061129
<DATE-OF-FILING-DATE-CHANGE>20061129
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>HALL PORTER J
<CIK>0001272140
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>000-50485
<FILM-NUMBER>061245254
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>6360 SOUTH  3000 E
<STREET2>SUITE 340
<CITY>SALT LAKE CITY
<STATE>UT
<ZIP>84121
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>5601 WEST WACO DRIVE
<CITY>WACO
<STATE>TX
<ZIP>76710
</MAIL-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>CENTRAL FREIGHT LINES INC
<CIK>0001085636
<ASSIGNED-SIC>4213
<IRS-NUMBER>742914331
<STATE-OF-INCORPORATION>NV
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>5601 WEST WACO DRIVE
<CITY>WACO
<STATE>TX
<ZIP>767022638
<PHONE>2547722120
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>5601 WEST WACO DRIVE
<CITY>WACO
<STATE>TX
<ZIP>767022638
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>CENTRAL FREIGHT LINES INC/TX
<DATE-CHANGED>19990503
</FORMER-COMPANY>
</ISSUER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-11-27</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001085636</issuerCik>
        <issuerName>CENTRAL FREIGHT LINES INC</issuerName>
        <issuerTradingSymbol>CENF</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001272140</rptOwnerCik>
            <rptOwnerName>HALL PORTER J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>6360 SOUTH 3000E SUITE 340</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SALT LAKE CITY</rptOwnerCity>
            <rptOwnerState>UT</rptOwnerState>
            <rptOwnerZipCode>84121</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Outside Director Stock Option (right to buy) Common Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>15.00</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2006-11-27</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>20000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.01</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2013-12-11</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>20000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">This option, which originally provided for vesting at the rate of 1,000 shares per meeting of the Board of Directors attended, was cancelled pursuant to the Agreement and Plan of Merger by and among the issuer, North American Truck Lines, LLC, and Green Acquisition Company in exchange for a cash payment of $200, or $0.01 per option share.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Porter J. Hall, by David J. Routh, attorney-in-fact, pursuant to a POA previously filed with the SEC.</signatureName>
        <signatureDate>2006-11-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
