The Green Light Phenomenon: What Might Be Causing These Unusual Flashing Lights

Driving on a modern highway often comes with a shared understanding between drivers about signals, lights, and the meaning of different types of emergency and service vehicles.

Most people are familiar with red and blue flashing lights, which are widely associated with law enforcement, fire services, and emergency medical response. These signals are universally recognized as indicators that other road users should yield or move aside to allow priority passage.