Ask X3What does 49 CFR 383.115 (Requirements for double/triple trailers endorsement) require?
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According to 49 CFR 383.115, to obtain a double/triple trailers endorsement, an applicant must have knowledge covering the following areas:
* Assembly and hookup: Procedures for assembling and hooking up the units.
* Trailer placement: Proper placement of the heaviest trailer.
* Handling and stability: Vehicle handling and stability characteristics, which include off-tracking, steering response, sensory feedback, braking, oscillatory sway, rollover in steady turns, and yaw stability in steady turns.
* Traffic operations: Potential problems encountered in traffic operations—such as slower speeds on steep grades, longer passing times, blocking the entry of other vehicles on freeways, splash and spray impacts, aerodynamic buffeting, view blockages, and lateral placement—that the vehicle may create for other motorists.
* Operating practices: Any other operating practices and procedures not specifically mentioned above.