What is a rear taillight
A light installation installed at the rear of a car
rear taillight is a light device installed at the rear of a vehicle, which has a variety of functions, mainly including profile lights, brake lights, turn signals, reversing lights and fog lights. These lighting devices can significantly improve vehicle visibility at night or in bad weather conditions, ensuring driving safety.
Specific function
Profile light : also known as a small light, used at night to show the width and height of the vehicle to help other vehicles recognize the presence of vehicles.
brake light : lights up when a vehicle is braking to alert vehicles behind it. It is usually red.
: indicates the direction of a vehicle. It is usually mounted on the side or rear of a vehicle and is yellow or amber in color.
reversing light : lights up when a vehicle is in reverse to illuminate the road behind it and warn vehicles and pedestrians behind it.
fog light : used in foggy or inclement weather conditions to improve visibility of vehicles, usually yellow or amber.
Design and installation requirements
There are strict regulations for the design and installation of automotive taillights. The visual surface projection of a single lamp on the datum axis is not less than 60% of the minimum rectangular area enclosed by the visual surface in the datum direction. The lamps configured in pairs should be installed symmetrically, and the red light cannot be seen in front of the car and the white light cannot be seen behind the car. In addition, the light color and chroma requirements of different lamps and light distribution performance are also specified.
Lamp type
There are three main types of automotive taillight bulbs: halogen, HID and LED. For example, turn signals generally use P21W base bulbs, and brake lights use P21/5W base bulbs. LED bulbs are more and more widely used in automotive headlights because of their high energy efficiency and long life.
The main role of the rear taillight includes the following aspects :
Improved visibility : At night or in poor visibility, rear taillights make the car more visible to other road users, reducing the likelihood of an accident. For example, width lights (position lights) are used when vehicles are parked to make them more visible at night or in low visibility, reducing the risk of collisions .
: Rear taillights signal vehicles behind through different lighting functions to remind them of the direction, position and speed of the vehicle. The details include:
Width indicator light : lights up during normal driving, showing the width and position of the vehicle .
brake light : lights when the driver presses the brakes to alert vehicles behind them that they are about to slow down or stop .
turn signal : notifies other vehicles and pedestrians of their intention to turn or change lanes, and helps them judge their driving route .
reversing light : lights up when reversing to warn pedestrians and vehicles behind to prevent accidents .
enhance driving stability : the design of rear taillights usually takes into account the principle of aerodynamics, which helps to reduce air resistance, thereby reducing energy consumption and improving the stability of the vehicle .
Aesthetic function : the design and style of the taillight is also a part of the appearance of the car, which can enhance the beauty and modern sense of the car .
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