Document ID: chunk:federal_register_of_legislation:F2017L01221:body:0:p12
Version: federal_register_of_legislation:F2017L01221
Segment Type: other
Provision Reference: 
Character Range: 32054–34729

of this Regulation is annexed to this communication

Annex 2
  Arrangements of approval marks
  Model A
(See paragraph 4.4. of this Regulation)
       The above approval mark affixed to a vehicle shows that the vehicle type concerned has been approved in Belgium (E 6) with regard to the Brake Assist System pursuant to Regulation No. 139. The first two digits of the approval number indicate that the approval was granted in accordance with the requirements of Regulation No. 139 in its original form.
  Model B
(See paragraph 4.5. of this Regulation)

       The above approval mark affixed to a  vehicle shows that the vehicle type concerned has been approved in Belgium (E 6) pursuant to Regulations Nos. 139 and 24[6]. (In the case of the latter Regulation the corrected absorption coefficient is 1.30 m-1). The approval numbers indicate that, at the dates when the respective approvals were given, Regulation No. 139 was in its original form and Regulation No. 24 included the 02 series of amendments.

Annex 3
  Method for determination of FABS and aABS
1.1. The brake pedal force FABS is the minimum pedal force that has to be applied for a given vehicle in order to achieve maximum deceleration which indicates that ABS is fully cycling. aABS is the deceleration for a given vehicle during ABS deceleration as defined in paragraph 1.8.
1.2. The brake pedal shall be applied slowly (without activating the BAS in the case of category B systems) providing a constant increase of deceleration until ABS is fully cycling (Figure 3).
1.3. The full deceleration must be reached within the timeframe of 2.0 ± 0.5 s. The deceleration curve, recorded against time, must be within a corridor of ± 0.5 s around the centre line of the deceleration curve corridor. The example in Figure 3 has its origin at the time t0 crossing the aABS line 2 seconds. Once full deceleration has been achieved, the brake pedal shall be operated so that the ABS continues fully cycling. The time of full activation of the ABS system is defined as the time when pedal force FABS is achieved. The measurement shall be within the corridor for variation of increase in deceleration (see Figure 3).
    Figure 3
    Deceleration corridor for determination of FABS and aABS

1.4. Five tests meeting the requirements of paragraph 1.3. shall be carried out. For each of these valid tests the vehicle deceleration shall be plotted as a function of the recorded brake pedal force. Only data recorded at speeds above 15 km/h shall be taken for the calculations described in the following paragraphs.
1.5. For the determination of aABS and FABS, a low pass filter of 2 Hz for vehicle deceleration as well as