Adding a fourth light to traffic signals would not only be good for autonomous vehicles and human drivers, it would also benefit pedestrians.

Laws that allow undocumented immigrants to get driver's licenses boost the overall health and well-being of immigrant moms and their babies.

Focusing on the deadly consequences of texting and driving but avoiding making people feel like they have no choice could change behavior.

An extra light on traffic signals could let self-driving cars control traffic flow and give a heads up to human drivers.

Nationwide, millions of people, disproportionately poor and people of color, are saddled with unaffordable criminal legal debt. A new report offers fixes.

Targeted policies that place limited restrictions on teens' driving behavior, especially at the right time, can improve safety, researchers find.

Reactions to alerts from collision avoidance systems, which are rarely tested in open road scenarios, fall into four categories, researchers say.