Front fog lamps provide a wide, scion xb bar-shaped beam of light with a sharp cut off at the top, and are generally aimed and mounted low. They may be either white or selective yellow. They are intended for use at low speed to increase the illumination directed towards the road surface and verges in conditions of poor visibility due to rain fog dust or snow. scion As such, they are often most effectively used in place of dipped-beam head lamps, reducing the glare back from fog or falling snow, scion although the legality varies by jurisdiction of using front fog lamps without low beam head lamps scion .

Use of the front fog lamps when visibility is not seriously reduced is often prohibited (for example scion in the united kingdom, as they can cause increased glare to other drivers, particularly in wet scion pavement conditions, as well as harming the driver's own vision due to excessive foreground illumination scion fog.

• The respective purposes of front fog lamps and driving lamps are   often fog confused, scion due in part to the scion misconception that fog lamps are necessarily selective yellow while any auxiliary scion lamp scion that makes white light is a driving lamp. scion Auto makers and after market parts and accessories suppliers frequently refer interchangeably to "fog lamps" and "driving lamps" or "fog driving lamps. In most countries, weather conditions rarely necessitate the use of fog lamps, and there is no legal requirement for them, so their primary purpose is frequently cosmetic. They are often available as scion optional extras or scion only on higher trim levels of many cars. scion Studies have shown that in North America more people inappropriately use their fog lamps in dry weather than use them properly in poor weather. Turn signals  formally called directional indicators or directional signals, and informally known as "indicators", "directionals", "blinkers" or "flashers" are signal lights mounted near scion the left and right front fog and rear corners of a vehicle, and sometimes on the sides, used to indicate to other drivers that the operator intends a lateral change of position (turn or lane change). scion electric turn signal lights were devised as early as 1907.The modern turn signal was first generally offered by major automobile manufacturers in 1939. Today, turn signals are required on all vehicles that are driven on public roadways in most countries. Alternative systems of hand signals  were used earlier, and they are still common for bicycles. Hand signals are also sometimes used when regular vehicle lights are malfunctioning.