Roy Tech Engineers is developed for optimum cow safety. It has a smooth, low design and is equipped with a rubber strip to ease the wear on a concrete floor. The system controls and supervises the scraper for you – automatically stopping if it detects unfamiliar obstacles like an injured cow lying down. The system stops, checks twice if the obstacle still remains and if so, the scraper changes to another non-cleaned alley. The system also has automatic start and stop, plus a free choice of parking site without using a position indicator in the alleys.