In autonomous transport, the direction of travel and the side areas of AGVs must be monitored in order to avoid any collision with people and objects. The USi-safety ultrasonic sensor systems reliably detect all obstacles in a defined safety area.Reliable Lateral Protection for Autonomous Transport of Large Tanks with USi-safety Unique Ultrasonic Sensor System Meets Requirements for PL d The Application In the chemical industry, tanks as long as 20 meters can be moved around the site with standard, category 3 PL d . The Solution USi-safety ultrasonic sensor system Several USi-safety ultrasonic sensors are distributed on each side of the vehicle. The very compact sensor unit can be mounted in places where other types of sensor would not fit