['CMV Parts and Maintenance']

['Vehicle maintenance']

03/24/2026

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CMV Parts and Maintenance - Vehicle maintenance

§393.71 Coupling devices and towing methods, driveaway-towaway operations

RegSense Fleet Safety Federal Motor Carrier Safety Administration (FMCSA), DOT CMV Parts and Maintenance Focus Area Compliance Docs Standard Interpretation English Vehicle maintenance Transportation USA

Question 1: May a fifth wheel be considered as a coupling device when towing a semi-trailer in a driveaway-towaway operation?

Guidance: Yes. Section 393.71(g) requires the use of a tow-bar or a saddle-mount. Since a saddle-mount performs the function of a conventional fifth wheel, the use of a fifth wheel is consistent with the requirements of this section.

['CMV Parts and Maintenance']

['Vehicle maintenance']

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