What is the speed limit on numbered highways outside urban districts?

The speed limit on numbered highways outside urban districts is set at 70 mph for passenger vehicles and 65 mph for trucks and buses. This regulation helps ensure safe travel on highways that are designed for higher speeds, where traffic is typically less congested compared to urban areas. The differentiation in speed limits is based on the size and weight of the vehicles, as larger vehicles often require more time and distance to stop, and thus are assigned a slightly lower speed limit for safety.

Understanding this aspect of speed limits is crucial for drivers operating in these environments, as adhering to posted limits contributes to road safety and helps prevent accidents. Other speed ranges mentioned in the question, while applicable in certain contexts, do not reflect the current regulations for numbered highways outside urban areas.