Is Brake-By-Wire Safe? First drive in the 2020 Audi e-Tron Sportback! Audi's e-Tron Sportback features brake-by-wire. What is brake-by-wire, and is it safe? In this video we'll look at the technology ...

As complex as cars are, brake lights are one part that everyone easily understands — you hit the pedal, and the brake lights come on. This alerts drivers behind you that you are slowing down and that ...