A red light signal indicates to a driver that they must stop.  There are variations in the red light signal that include a flashing red light, which signals the driver to stop and proceed with caution, and the side-by-side flashing red lights which warns a driver of a railroad crossing.  If the side-by-side red lights are flashing, there is a train approaching and the driver must stop.  If they are not flashing, the driver can proceed with caution across the railroad tracks.

Red light signals, except for those at railroad crossings, are found at intersections and/or in areas of heavy pedestrian traffic.  When you approach a red light, you must come to a complete stop and wait for the light to turn green before proceeding.  If you are making a right-hand turn, you must still come to a complete stop at a red light and proceed only after you have determined that there is no sign posted that restricts right-hand turns on red, there is no oncoming traffic and/or there are no pedestrians on the road.