What is the maximum length of a truck-tractor and semi-trailer on interstates and designated highways?

The maximum length allowed for a truck-tractor and semi-trailer on interstates and designated highways in Missouri is 53 feet. This regulation is in place to ensure safety and facilitate the efficient flow of traffic. Keeping truck lengths within these limits helps prevent potential accidents that could arise from longer vehicles that are more difficult to maneuver or control.

Longer vehicles can also complicate merging and stopping distances, impacting traffic patterns. Therefore, the designation of 53 feet strikes a balance, allowing for adequate cargo capacity while maintaining highway safety standards. The figure is widely accepted across many states, contributing to consistency in trucking regulations regionally and nationally. Understanding this regulation is essential for truck drivers to ensure compliance and avoid fines or penalties while operating on highways.