1.2. In the case of paragraph 1.1.2., the parts used to connect the RUPD to part of the vehicle chassis shall be equivalent to those which are used to secure the RUPD when it is installed on the vehicle.The part of the chassis can be fixed on a test bench as shown in Figure 1, representing the minimum requirements to be fulfilled. The structures used as side rails shall be representative of the chassis of vehicles for which the underrun protection system is intended. a0c0