Division (33) To ensure a maximum tolerance on speed displayed of ± 6 km/h in use, and taking into account:

• a ± 2 km/h tolerance for input variations (tyre variations, …),

• a ± 1 km/h tolerance in measurements made during installation or periodic inspections,

the recording equipment shall, for speeds between 20 and 180 km/h, and for characteristic coefficients of the vehicle between 4 000 and 25 000 imp/km, measure the speed with a tolerance of ± 1 km/h (at constant speed).