Division 3.1 Overall measurement accuracy, precision, resolution and frequencyF1

The required overall measurement accuracy shall be as follows:

1. (a)

   Vehicle speed accuracy: ± 0,2 km/h with a measurement frequency of at least 10 Hz;

2. (b)

   Time: min. accuracy: ± 10 ms; min. precision and resolution:10 ms;

3. (c)

   Wheel torque accuracy: ± 6 Nm or ± 0,5 per cent of the maximum measured total torque, whichever is greater, for the whole vehicle, with a measurement frequency of at least 10 Hz;

4. (d)

   Wind speed accuracy: ± 0,3 m/s, with a measurement frequency of at least 1 Hz;

5. (e)

   Wind direction accuracy: ± 3°, with a measurement frequency of at least 1 Hz;

6. (f)

   Atmospheric temperature accuracy: ± 1 °C, with a measurement frequency of at least 0,1 Hz;

7. (g)

   Atmospheric pressure accuracy: ± 0,3 kPa, with a measurement frequency of at least 0,1 Hz;

8. (h)

   Vehicle mass measured on the same weighing scale before and after the test: ± 10 kg (± 20 kg for vehicles > 4 000 kg);

9. (i)

   Tyre pressure accuracy: ± 5 kPa;

10. (j)

    Wheel rotational speed accuracy: ± 0,05 s^{– 1} or 1 per cent, whichever is greater.