The underride tractors are based on MLR's CAESAR range of AGVs, radically modified and optimized for this project where their task is to transport containers in hospitals. These AGVs are built entirely of stainless steel. All cover panels and the lift unit are completely sealed (IP54). This means the vehicles can be disinfected using hot steam jets from all sides – even underneath – in compliance with increasingly rigorous hygiene standards. During cleaning, AGV surfaces must withstand temperatures of up to 85 °C. The AC drive systems are fully encapsulated to keep noise levels down. The drive technology is engineered to allow the AGVs to move forwards and backwards equally fast (maximum speed 1.7 m/s). Safety in both directions is ensured by laser scanners at the front and rear of each vehicle.
Installation in the hospital will be completed by early 2008. After an intensive test phase, the system is scheduled to go into full operation, serving patients fast and reliably, by December 2008.