What is the speed limit for trucks/tractors with three or more axles?

The speed limit for trucks and tractors with three or more axles is typically set at 55 mph. This regulation is implemented to promote safety on the road, as heavier vehicles require more time and distance to stop, and they can be less maneuverable than lighter vehicles. Lower speed limits help accommodate these factors, reducing the likelihood of accidents involving larger trucks, which can cause more severe collisions due to their size and weight.

Given that other speed limits may apply to different types of vehicles or specific road conditions, it is essential for drivers to be aware of and adhere to these regulations, particularly in California, where they are designed to maintain safe travel for all road users.