Division 6.2 Calculation of Lurban ASEP

From any L_{wot ASEP} as measured in accordance with this Annex, L_{urban ASEP} shall be calculated as follows:

1. (a)

   calculate a_{wot test ASEP} as specified in point 4.1.2.1.2.1 or point 4.1.2.1.2.2 of Annex II, as applicable;

2. (b)

   determine the vehicle speed (V_{BB ASEP}) at BB' during the L_{wot ASEP} test;

3. (c)

   calculate k_{P ASEP} as follows:

   k_{P ASEP} = 1 – (a_urban/a_{wot test ASEP})

   Test results where a_{wot test ASEP} are less than a_urban shall be disregarded.

4. (d)

   calculate L_{urban measured ASEP} as follows:

   L_{urban measured ASEP} =

   L_{wot ASEP} – k_{P ASEP} * (L_{wot ASEP} – L_crs)

   For further calculation, use the L_urban from Annex II without rounding, including the digit after the decimal (xx.x).

5. (e)

   calculate L_{urban normalized} as follows:

   L_{urban normalized} = L_{urban measured ASEP} – L_urban

6. (f)

   calculate L_{urban ASEP} as follows:

   L_{urban ASEP} =

   L_{urban normalized} – (0,15 * (V_{BB ASEP} – 50))

7. (g)

   compliance with sound level limits:

   L_{urban ASEP} shall be less than or equal to 3,0 dB.