CHMSL, Rear Stop/Turn/Tail
CHMSL, Rear Stop/Turn/Tail
CHMSL stands for “Center High-Mounted Stop Lamp.” It is a safety feature in the automotive industry that refers to the third brake light mounted at the center of the rear of a vehicle, usually at eye level for drivers following behind. The primary purpose of the CHMSL is to enhance road safety by improving the visibility of braking signals, particularly during sudden stops. Here are some key points about the CHMSL in automotive applications:
1. Brake Signal Enhancement:
The CHMSL is a supplementary brake light that works in conjunction with the standard left and right brake lights. When the driver applies the brakes, all three lights illuminate simultaneously, creating a more noticeable and attention-grabbing brake signal.
2. Height and Visibility:
The placement of the CHMSL at the center of the rear window or at the top of the rear windshield makes it highly visible to drivers of vehicles following behind. This location ensures that the brake signal is seen even if the following vehicle is close.
3. Safety and Collision Avoidance:
CHMSLs are designed to reduce the likelihood of rear-end collisions. Their increased visibility can provide drivers behind with more time to react to sudden braking, which can be crucial in preventing accidents.
4. Legal Requirement:
In many countries, the inclusion of a CHMSL is a legal requirement for all new vehicles. Regulations mandate that it must be operational and comply with specific standards to ensure optimal visibility and safety.
5. Types of CHMSLs:
CHMSLs come in various forms, including a single light bar or strip, multiple LED elements, or other designs. Many modern vehicles use LED technology in their CHMSL for improved energy efficiency and durability.
6. Inclement Weather and Reduced Visibility:
The CHMSL is especially beneficial during adverse weather conditions, such as heavy rain, fog, or snow, when visibility is reduced. The CHMSL’s enhanced brightness ensures it can be seen in a wider range of conditions.
7. Increased Reaction Time:
Research has shown that the inclusion of a CHMSL can provide following drivers with additional reaction time, particularly at higher speeds, reducing the risk of rear-end collisions.
8. Maintenance and Replacement:
CHMSLs are essential safety components, and their functionality should be regularly checked. If a CHMSL fails, it should be promptly replaced to maintain road safety compliance.
The CHMSL is a simple yet effective safety feature that has become a standard in the automotive industry. It serves a crucial role in reducing the risk of rear-end collisions and enhancing the overall safety of vehicles on the road. Its prominence and visibility make it a valuable addition to the array of brake lights, providing additional peace of mind for both drivers and following motorists.
