-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 HtJZPFAFpSNz4jO1BK9/UvhlIQBxbau8vGAg003piylpIZKcEPvVvq7cyb2I+y/5
 vA+DrnMQEVsuk3sAZf1o+A==

<SEC-DOCUMENT>0001019687-10-000896.txt : 20100308
<SEC-HEADER>0001019687-10-000896.hdr.sgml : 20100308
<ACCEPTANCE-DATETIME>20100308193641
ACCESSION NUMBER:		0001019687-10-000896
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100302
FILED AS OF DATE:		20100308
DATE AS OF CHANGE:		20100308

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MOROUN  MANUEL J
		CENTRAL INDEX KEY:			0001202714

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-15057
		FILM NUMBER:		10665026

	MAIL ADDRESS:	
		STREET 1:		CENTRAL TRANSPORT INTL
		STREET 2:		12225 STEPHENS RD
		CITY:			WARREN
		STATE:			MI
		ZIP:			48089

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PAM TRANSPORTATION SERVICES INC
		CENTRAL INDEX KEY:			0000798287
		STANDARD INDUSTRIAL CLASSIFICATION:	TRUCKING (NO LOCAL) [4213]
		IRS NUMBER:				710633135
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		297 WEST HENRI DE TONTI BLVD
		CITY:			TONTITOWN
		STATE:			AR
		ZIP:			72770
		BUSINESS PHONE:		4793619111

	MAIL ADDRESS:	
		STREET 1:		297 WEST HENRI DE TONTI BLVD
		CITY:			TONTITOWN
		STATE:			AR
		ZIP:			72770
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-03-02</periodOfReport>

    <issuer>
        <issuerCik>0000798287</issuerCik>
        <issuerName>PAM TRANSPORTATION SERVICES INC</issuerName>
        <issuerTradingSymbol>PTSI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001202714</rptOwnerCik>
            <rptOwnerName>MOROUN  MANUEL J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CENTRAL TRANSPORT INTERNATIONAL</rptOwnerStreet1>
            <rptOwnerStreet2>12225 STEPHENS ROAD</rptOwnerStreet2>
            <rptOwnerCity>WARREN</rptOwnerCity>
            <rptOwnerState>MI</rptOwnerState>
            <rptOwnerZipCode>48089</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Director stock option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>14.32</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2010-03-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2010-03-02</value>
            </exerciseDate>
            <expirationDate>
                <value>2015-03-02</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ C. Douglas Buford, Jr. as Attorney-in Fact for Manuel J. Moroun</signatureName>
        <signatureDate>2010-03-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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