Who has the authority to overrule a traffic signal?

Police officers and state troopers have the authority to overrule traffic signals to ensure the safety and smooth flow of traffic during various situations, such as emergencies or traffic control. When they are directing traffic, their commands take precedence over the signals, as they are trained to manage potentially hazardous situations and direct vehicles and pedestrians for optimal safety.

For instance, if there is an accident at an intersection, a police officer may instruct vehicles to move through a red light or come to a stop, depending on the circumstances. This authority is granted to them to help prevent accidents and to maintain order on the roads, especially in critical situations.

In contrast, while crossing guards can assist in managing pedestrian traffic, their authority is generally limited to the areas where they are stationed, and they are not empowered to overrule traffic signals like law enforcement officers can. Emergency vehicles are prioritized on the roadway, but they do not have the authority to directly stop traffic signals; instead, their presence prompts other drivers to yield. Therefore, the ability of law enforcement to overrule traffic signals is a necessary tool for maintaining public safety on the roads.