A shining example.

Dynamic braking lights on the
BMW 3 Series Touring.

Sudden stops - emergency braking - are not a regular element of everyday driving. But it's precisely at these moments that the fast reactions of drivers behind are most important. Dynamic braking lights are a dual-stage brake light system. For normal braking, the main light element blinks and it also blinks just before the vehicle comes to a standstill. Drivers behind intuitively understand and can react accordingly.