What is a blinker in a car?

The turn signal (blinker) on a car is a safety device that uses flashing amber lights to convey the vehicle's intended direction of travel to other road users, primarily for scenarios such as turning, changing lanes, or making a U-turn. According to traffic regulations, drivers should turn on the turn signal at least 3 seconds in advance before performing the manoeuvre (It is best to do so 30 meters in advance on urban roads and more than 50 meters in advance on highways) to ensure that vehicles behind have sufficient reaction time. Most modern vehicles are equipped with an automatic reset function; if it does not turn off automatically, it needs to be reset manually. The technology of turn signals has been upgraded from traditional halogen bulbs to LED light sources, which have faster response and longer lifespan. Some high-end models also adopt a dynamic flowing lighting effect to enhance warning. It is necessary to regularly check whether the bulbs or LED modules are working normally in daily use to avoid signal misjudgment due to malfunctions. Correct use of turn signals can significantly reduce the risk of lane-changing collision accidents and is a basic safety operation that drivers must master.