What is the turn signal on a car called?

In automotive terminology, the turn signal is commonly referred to as "direction indicator" or "turn indicator", with its standard English designation being "turn signal". It communicates a vehicle's turning, lane-changing, or U-turn intentions to other road users through rhythmic amber light flashes, serving as a mandatory safety feature. Traffic regulations mandate turn signal activation at least 3 seconds prior to turning or lane changes, with expressway recommendations exceeding 50 meters advance notice to ensure adequate reaction time for following vehicles. Contemporary vehicle models predominantly employ LED turn signals, offering quicker response times and extended durability, while premium vehicles may feature sequential dynamic turn signals for heightened conspicuity. Routine inspection of bulbs or LED modules is essential to prevent signaling failures caused by malfunction.