The Long-Range Radar sensor LRR3 detects objects and measures their velocity and position in relation to the motion of the radar-equipped vehicle. The sensor works in the approved frequency band between 76 and 77 gigahertz. It has a detection range of 0.5 to 250 meters and a field of view of approximately 30 degrees.

The LRR3 is the centerpiece of driver assistance systems such as the Predictive Emergency Braking System and the automatic distance and speed control system ACC (Adaptive Cruise Control).

Bosch is the first manufacturer to make use of silicon-germanium technology in the high-frequency module of the radar sensor. As a result, in the future the LRR3 sensor can also be featured more and more in medium- and compact-class cars. In addition, the improved range of the sensor was made possible without the use of any moving parts whatsoever, which makes it more robust.