From the days of horse and carriage, speed limit science (speed science) has been used to help establish speed limits on how fast (or slow) people and their vehicles should go. I’ve spent years ...

Speed limits are a subject of constant discussion across America, and because of decentralized state regulation over the limits, there can be a wide variance in limits from state to state. Arizona, ...

Observant motorists may notice a curious trend on U.S. roads: Driving on highways is getting faster while city speeds are getting slower. In denser, more residential areas, an increasing number of ...