Division 2.2.2.1
United Kingdom
F1Vehicles of categories R1a, S1a do not need to be fitted with a service braking system. Vehicles of categories R1b and S1b, where the sum of the technically permissible masses per axle does not exceed 750 kg, do not need to be fitted with a service braking system. However, if vehicles of these categories are equipped with a service braking system, this system shall comply with the same requirements as those of category R2 or S2 as appropriate.