Engineers at Japan’s Fukuoka Institute of Technology are developing a ‘Safe Driving Promotion System’ that warns drivers about what kind of crash could ensue if they don’t slow down. The system uses radar, ultrasound sonar, and laser sensors to calculate a vehicle’s current kinetic energy.

It also checks the distance to the vehicle in front and keeps watch on its brake lights. An onboard app that has learned the driver’s reaction time then computes the likelihood of collision and – if the driver’s speed is risky – predicts the scale of damage that could result.

– NewScientist.com