Headlight flashing

Headlight flashing refers to the act of either briefly switching on the headlights of a car, or of momentarily switching between a headlight's high beams and low beams, in an effort to communicate with another driver or drivers. This signal can be intended to convey a variety of messages, including a warning to other drivers of road hazards or of speed traps, and it can also be a form of aggressive driving. The legality of headlight flashing varies by jurisdiction. Contents 1 History 2 Uses 3 Effectiveness 4 Ambiguity 5 Legality 5.1 United States 5.2 Jamaica 5.3 Australia 5.4 Canada 5.5 United Kingdom 6 Urban legend 7 References History [edit] Headlight flashing might have come into use as a common means of attempting driver-to-driver communication by the mid-1970s,[1] when cars began to come with headlight beam selectors located on the steering column—typically activated by pulling the turn signal stalk—rather than the previous foot-operated pushbutton switches. Th... (see more)