3. A bus or minibus shall be designed in such a way that the axial loads and the total loaded mass do not exceed those indicated by the chassis manufacturer.
To determine those loads and that mass, the following weights are fixed for each space occupied:
(1) 70 kg for the driver and for each ambulatory passenger, in other words, each passenger able to move about without a wheelchair;
(2) 150 kg for each passenger in a wheelchair.