What additional functions do car turn signals have?
2 Answers
Car turn signals have the function of indicating turns, as well as illumination and a form of communication function. Here is relevant information about car turn signals: Introduction: Car turn signals are lights that serve to alert pedestrians or vehicles in front of or behind the car when it is turning. Principle: The lamp uses a xenon tube, with a microcontroller controlling the circuit, enabling alternating left-right flashing without interruption. Types of flashers used: Depending on their structure, they can be divided into three types: resistance wire type, capacitor type, and electronic type. The resistance wire type can be further divided into thermal filament type (electrothermal) and vane type (spring bounce), while the electronic type can be divided into hybrid type (with relay contacts and electronic components) and fully electronic type (without relay). For example, the spring bounce flasher uses the principle of current thermal effect, with thermal expansion and contraction as the driving force, causing the spring plate to produce sudden movements to connect and disconnect the contacts, achieving light flashing.
I've driven many cars and noticed that the turn signals also serve as hazard warning lights. When a vehicle breaks down and is parked on the roadside, pressing the red triangular button on the panel makes all turn signals flash rapidly together to alert approaching vehicles to steer clear. Additionally, some models flash the turn signals a few times as a visual cue when unlocking or locking the car. Some premium vehicles even integrate the turn signals with daytime running lights, creating a cool flowing light effect when signaling. There are also models equipped with cornering lights, where the fog light on the turning side automatically illuminates to light up the curve—a particularly handy feature on narrow roads.
