What sensors are often used in "pre-crash systems" to detect potential collisions?

Pre-crash systems are designed to identify potential collisions before they occur, allowing the vehicle to take preventive actions. The use of radar and laser sensors is particularly effective for this purpose. Radar systems emit radio waves that can detect the speed and distance of objects in close proximity, making them valuable for measuring the closing speed of potential obstacles. This allows the vehicle’s systems to assess the risk of a collision accurately.

Laser sensors, which work by emitting laser beams and measuring the time it takes for the light to reflect back, provide highly precise distance measurements to obstacles. This precision is crucial for pre-crash systems to determine the necessary response, such as automatic braking or collision avoidance steering.

Together, these technologies enable pre-crash systems to function optimally, enhancing vehicle safety by responding quickly to imminent threats. Other sensor types do not provide the same level of accuracy or responsiveness for collision detection, making radar and laser the preferred choices in these systems.