The phrase "precollision system" refers to a safety technology in vehicles that helps prevent accidents by detecting potential collisions and alerting the driver or applying the brakes automatically. Full definition
Lexus also has an available electronic precollision system with Collision Avoidance Assist. (cars.com)
The forward - looking cameras that help power the forward precollision system can see even farther, taking advantage of the infrared spectrum to see even farther down the road than the headlamps allow. (cnet.com)
Available precollision system, which can tighten the front seat belts and ready the brakes for stronger stopping performance (cars.com)