Learning road signs can seem like a one-time job. People cram for a test, then drive for years on habit. Yet signs change, routes change, and memory fades. Some symbols also ask drivers to supply ...

A solid green light has meant “go” to American drivers for nearly a century. But […] ...

There's a new pedestrian crossing signal in town. Rather than relying on long-standing laws requiring motorists to stop for pedestrians in a crosswalk, the Pedestrian Hybrid Beacon uses yellow and red ...