What does a solid red traffic light mean?

A solid red traffic light signifies that vehicles must stop and not enter the intersection. This is a critical rule in traffic management aimed at ensuring safety. When the light is red, all drivers are required to halt their vehicles and remain stopped until the light changes to green. This rule helps prevent accidents by ensuring that vehicles do not enter intersections when it is unsafe to do so, allowing for the safe passage of other traffic and pedestrians, especially those who may have the right of way at that moment. The importance of this rule highlights the need for drivers to be attentive and compliant with traffic signals to maintain order and safety on the roads.