Appendix 3

The prescribed braking rate referred to in point 5.3.5 of this Annex may be calculated by reference to the measured coefficient of adhesion of the two surfaces on which this test is carried out.

The two surfaces shall satisfy the conditions set out in point 5.3.4. of this Annex.

The coefficient of adhesion (k_H and k_L) of the high- and low-adhesion surfaces, respectively, shall be determined in accordance with the provisions in point 1.1 of Appendix 2.

The braking rate (z_MALS) for laden tractors shall be:

$z_{\mathrm{MALS}}\ge \mathrm{0,75}\frac{4k_L+k_H}{5}$ and $z_{\mathrm{MALS}}\ge k_L$

The braking rate referred to in point 6.3.2 of this Annex may be calculated by reference to the measured braking rates z_RALH and z_RALL on the two surfaces on which the tests are carried out with the anti-lock braking system operative. These two surfaces shall satisfy the conditions prescribed in point 6.3.2 of this Annex.

The braking rate z_RALS shall be:

$z_{\mathrm{RALS}}\ge \frac{\mathrm{0,75}}{{\epsilon }_H}\times \frac{4z_{\mathrm{RALL}}+z_{\mathrm{RALH}}}{5}$ and

If ε_Η > 0,95 use ε_Η = 0,95.