![]() ![]() Are you exceeding truck gross vehicle weight rating (GVWR) and/or gross axle weight ratings (GAWRs), including the effect of trailer tongue weight as part of the weight analyses?. ![]() In contrast, with vocational drivers who occasionally use trailers (often different types with varying loads and configurations), there are more opportunities for mistakes.Ĭouplings for commercial motor vehicles are regulated under Federal Motor Carrier Safety Regulations (FMCSR) Part 393.70, and coupler performance requirements are covered under various SAE Standards, such as J684, J847 and J2638.įour central issues can impact occasional trailer towing: For instance, Class 8 drivers in over-the-road and less-than-truckload applications tend to experience fewer loading issues specific to the towing vehicle simply because their natural operating state is with a trailer. Trailering behind vocational trucks is often taken for granted. ![]()
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