A variable speed limit system changes the max speed limit throughout the day. Instead of a static limit, it's based on road ...

Beware, bad drivers: Some states are passing laws that punish reckless driving with devices that control vehicles' top speeds. Washington State recently became the second state in the U.S., joining ...

North Dakota has joined the ranks of states with a maximum speed limit of 80 mph on certain multi-lane highways, making it the ninth state to do so. The new bill was passed by the state's legislature ...