What does a solid red traffic light indicate?

A solid red traffic light indicates that drivers must stop and wait for the light to change. This signal is a clear directive for all vehicles to halt their movement, ensuring safety at intersections. It is essential for drivers to comply with this signal to prevent accidents and ensure smooth traffic flow. When the light is red, vehicles must remain stationary until the signal changes to green and it is safe to proceed. This traffic control measure is fundamental in regulating vehicle movement and protecting pedestrians crossing at intersections.