Document ID: chunk:federal_register_of_legislation:F2018L01515:body:0:p24
Version: federal_register_of_legislation:F2018L01515
Segment Type: other
Provision Reference: 
Character Range: 65466–68073

20       4               12 **    45 *     6        20
*    50 for rigid vehicles with 2 or more steered axles excluding self tracking equipment
**  or full lock if 12 m radius is not attainable.

6.3. Provisions for trailers
6.3.1. The trailer shall travel without excessive deviation or unusual vibration in its steering equipment when the towing vehicle is travelling in a straight line on a flat and horizontal road at a speed of 80 km/h or the technically permissible maximum speed indicated by the trailer manufacturer if this is less than 80 km/h.
6.3.2. With the towing vehicle and trailer having adopted a steady state turn corresponding to a turning circle radius of 25 m (see paragraph 2.4.6.) at a constant speed of 5 km/h, the circle described by the rearmost outer edge of the trailer shall be measured. This manoeuvre shall be repeated under the same conditions but at a speed of 25 km/h ±1 km/h. During these manoeuvres, the rearmost outer edge of the trailer travelling at a speed of 25 km/h ±1 km/h shall not move outside the circle described at a constant speed of 5 km/h by more than 0.7 m.
6.3.3. No part of the trailer shall move more than 0.5 m beyond the tangent to a circle with a radius of 25 m when towed by a vehicle leaving the circular path described in paragraph 6.3.2. along the tangent and travelling at a speed of 25 km/h. This requirement shall be met from the point the tangent meets the circle to a point 40 m along the tangent. After that point the trailer shall fulfil the condition specified in paragraph 6.3.1.
6.3.4. The annular ground area swept by the towing vehicle/trailer combination with an intact steering system, driving at no more than 5 km/h in a constant radius circle with the front outer corner of the towing vehicle describing a radius of 0.67 x vehicle combination length but not less than 12.5 m is to be measured.
6.3.4.1. If, with a fault in the steering system, the measured swept annular width is > 8.3 m, then this shall not be an increase of more than 15 per cent compared with the corresponding value measured with the intact steering system. There shall not be any increase in the outer radius of the swept annular width.
6.3.5. The tests described in paragraphs 6.3.2., 6.3.3. and 6.3.4. shall be conducted in both clockwise and anti-clockwise directions.
7.  Conformity of production
 The Conformity of Production Procedures shall comply with those set out in the 1958 Agreement, Schedule 1 (E/ECE/TRANS/505/Rev.3) with the following requirements:
7.1. The holder of the approval shall ensure that results of the conformity of production