Automotive supplier Webasto recently unveiled the prototype of an aesthetic and fully integrated sensor roof module for autonomous driving. Polycarbonate plastics from Covestro enable lightweight, aesthetic and durable component construction.

The safety of all road users is the most important prerequisite for the introduction of autonomous driving. To achieve this, cars must "learn" to recognize obstacles and dangers in good time and react appropriately.

This is only possible through the use of sophisticated sensor technologies. Automotive supplier Webasto recently unveiled a prototype of an aesthetic and fully integrated sensor roof module for autonomous driving. For its production, Webasto uses the transparent polycarbonate Makrolon AG and the black PC-ABS Bayblend T95 MF from Covestro: The first mentioned product was developed for use in glass-like exterior components and is highly permeable to various sensor signals.

"We are proud to work with Webasto and other partners to develop innovative solutions for autonomous driving," says Dr. Fabian Grote, Head of Global Technical Marketing Mobility in Covestro's Engineering Plastics segment.

"The complete sensor technology is hidden under a seamless roof module made of Makrolon AG. Our plastic is lightweight, durable, robust and transparent, and offers an ideal solution for integrating sensors into vehicles. We are pleased to be contributing to more sustainable mobility."

The sensors and cameras measure the distance and speed of objects in front of and alongside the vehicle and also reliably detect traffic lights, traffic signs and road markings. To function optimally, they must not get too warm. This is ensured by a thermal management system from Webasto. Here, the high heat resistance of polycarbonate ensures that the roof module retains its shape even at high outside temperatures and in strong sunlight and does not impair the function of the sensors. Cleaning and de-icing systems, on the other hand, ensure flawless operation in winter.

The new sensor roof module concept offers plenty of functionality and design freedom. Polycarbonates from Covestro are permeable to LiDAR radiation, which is a prerequisite for autonomous driving. © Webasto Group