Informative braking.

Brake Force Display on the BMW Z4 Roadster.

Only a small fraction of everyday braking is emergency braking. And yet it's on these rare occasions that the reactions of other drivers are so important. That's why the BMW Z4 Roadster comes with two-stage brake lights that vary according to the braking pressure. In heavy braking, a second light section is illuminated, allowing the drivers behind to recognise emergency braking by the brightness of the stop lights and to react accordingly.