Document ID: chunk:federal_register_of_legislation:F2017C01153:front:0:p14
Version: federal_register_of_legislation:F2017C01153
Segment Type: other
Provision Reference: 
Character Range: 41260–44169

above approval mark affixed to a vehicle shows that the vehicle type concerned has, with regard to braking, been approved in the United Kingdom (E11) pursuant to Regulation No. 78 under approval number 032439.  The first two digits of the approval number indicate that Regulation No. 78 already included the 03 series of amendments when the approval was granted.

    Model B

    (See paragraph 4.5. of this Regulation)

a = 8 mm min.

The above approval mark affixed to a vehicle shows that the vehicle type concerned has been approved in the United Kingdom (E11) pursuant to Regulations Nos. 78 and 40. */  The first two digits of the approval numbers indicate that, at the dates when the respective approvals were granted, Regulation No. 78 included the 03 series of amendments but Regulation No. 40 was still in its original form.
_____________________

*/ This latter number is given merely as an example.
         Annex 3

    TEST CONDITIONS, PROCEDURES AND PERFORMANCE REQUIREMENTS

       1. General

       1.1. Test surfaces

       1.1.1. High friction surface:

            a) Applicable to all dynamic brake tests excluding the ABS tests where a low-friction surface is specified;

            b) The test area is a clean and level surface, with a gradient ≤  1 per cent;

            c) The surface has a nominal peak braking coefficient (PBC) of 0.9, unless otherwise specified.

       1.1.2. Low friction surface:

        a) Applicable to all dynamic brake tests where a low-friction surface is specified;

        b) The test area is a clean, dry and level surface, with a gradient ≤  1 per cent;

        c) The surface has a PBC of  ≤  0.45.

       1.1.3.                   Measurement of PBC:

        The PBC is measured as determined by the approval authority using either:

        (a) The American Society for Testing and Materials (ASTM) E1136 standard reference test tyre, in accordance with ASTM Method E1337‑90, at a speed of 40 mph without water delivery; or

        (b) The method specified in the Appendix to Annex 4 of UNECE Regulation No. 78, 01 series of amendments.

       1.1.4. Parking brake system tests:

        The specified test slope has a clean and dry surface that does not deform under the mass of the vehicle.

       1.1.5. Test lane width:

        For two-wheeled vehicles (vehicle categories L1 and L3) the test lane width is 2.5 m.

        For three-wheeled vehicles (vehicle categories L2, L5 and L4) the test lane width is 2.5 m plus the vehicle width.

       1.2. Ambient temperature

        The ambient temperature is between 4 °C and 45 °C.

       1.3. Wind speed

        The wind speed is not more than 5 m/s.

       1.4. Test speed tolerance

        The test speed tolerance is ± 5 km/h.

        In the event of the actual test speed deviating from the specified test speed, the actual stopping distance is corrected using the formula