The maximum speed limit for vehicles towing trailers is __________ on a two-lane undivided highway.

• A. 65 mph
• B. 55 mph
• C. 45 mph
• D. 50 mph

Answer: (B)

Towing a trailer changes how a vehicle handles, because the trailer adds length, weight, and a longer stopping distance, plus more sway in wind or during quick maneuvers. On a two-lane undivided highway, this means you need more time and space to react to hazards and to stop safely. Setting the limit at 55 mph gives you that extra margin for safe braking and stability, reducing the risk of losing control or having trouble stopping if traffic slows or someone else behaves unpredictably. Faster speeds don’t leave enough room to manage the extra distance and maneuvering requirements that come with towing. While posted signs always govern the exact limit, 55 mph is the standard guidance for towing on these roads.