Even a one-kilometre-an-hour hike in speed can make it more likely that a pedestrian will die in a crash, analysis shows, but the limits also have to make sense for how a road is designed and used ...

In the early days of motoring, there was no nationwide speed limit. This meant that drivers could theoretically reach very high speeds on certain public roads without worrying about tickets. However, ...

The future of highway patrols and law enforcement debuts in Miami with the unveiling of the nation’s first autonomous police patrol vehicle.