Traffic lights - in front of blue sky

Keywords:

attention, auto, caution, city, communication, concept, conceptual, control, crossing, crossroad, danger, drive, glowing, go, highway, hour, illuminated, intersection, law, light, pole, red, risk, road, route, rush, safe, safety, sign, signal, sky, starting, stop, stoplight, street, traffic, transit, transport, transportation, warning, way,