What does a solid red traffic signal indicate?

A solid red traffic signal universally means that drivers must stop their vehicles completely before the stop line or intersection. This is a critical rule for maintaining safety on the roads; it ensures that vehicles do not enter an intersection when it is unsafe to do so, preventing potential collisions. The stop requires a complete halt until the signal changes to green or until it is safe to proceed, such as when yielding to other traffic or pedestrians as indicated by other signals or signage.

Understanding the importance of this signal underscores all road users' responsibilities—both drivers and pedestrians—since a red light is in place to regulate traffic flow and minimize accidents at intersections. The necessity of a complete stop before proceeding is fundamental to traffic rules and is enforced by law.