5.4.  Particular test specifications 

5.4.1.  Test in configuration of a three-point belt in corporating a retractor having a pulley or strap guide at the upper belt anchorage 

5.4.1.1. A special pulley or guide  for the wire or strap appropriat e to transmit the load from the 

traction device, or the pulley or strap guide s upplied by the manufacturer shall be fitted to 

the upper belt anchorage. 

▼M3 

5.4.1.2. For vehicles in categories M1 and N1, a test load of1350 ± 20 daN shall be applied by a 

traction device (see  ►M4 Annex III ◄, figure 2) attached to the belt anchorages of the same belt by means of a device reproduci ng the geometry of the upper torso strap of such a safety belt. For vehicles in categories M2 and N2, the test load shall be 675 ± 20daN. For vehicles in categories M3 and N3, the test load shall be 450 ± 20 daN. 

5.4.1.3. For vehicles in categories M1 and N1, at the same time a tractive force of1350 ± 20 daN 

shall be applied to a traction device (see ►M4 Annex III ◄, figure 1) attached to the two 

lower belt anchorages. 

For vehicles in categories M2 and N2, this te st load shall be 675 ± 20 daN. For vehicles in 

categories M3 and N3, this test load shall be 450 ± 20daN. 

▼B 

5.4.2. Test in configuration of a three-point belt without retractor or  with a retractor at the upper belt 

anchorage 

▼M3 

5.4.2.1. For vehicles in categories M1 and N1, a test load of1350 ± 20 daN shall be applied to a 

traction device (see  ►M4 Annex III  ◄, figure2) attached to the belt upper anchorage and 

to the opposite lower belt anchorage of the same belt, using, if supplied by the manufacturer, a retractor fixed at the upper belt anchorage.   For vehicles in categories M2 and N2, this test load shall be 675 ± 20 daN. For vehicles in categories M3 and N3, this test load shall be 450 ± 20daN. 

5.4.2.2. For vehicles in categories M1 and N1, at the same time a tractive force of1 350 ± 20 daN 

shall be applied to a traction device (see ►M4 Annex III  ◄, figure 1) attached to the lower 

belt anchorages.   For vehicles in categories M2 and N2, this test load shall be 675 ± 20daN. 

For vehicles in categories M3 and N3, this test load shall be 450 ± 20daN. 

5.4.3.  Test in configuration of a lap belt. 

For vehicles in categories M1 and N1, a test load of 2225 ± 20 daN shall be applied to a 

traction device (see  ►M4 Annex III ◄, figure 1) attached to the two lower belt anchorages. 

For vehicles in categories M2 and N2, this test load shall be 1 110 ±20 daN. 

For vehicles in categories M3 and N3, this test load shall be 740 ± 20daN. 

▼B 

5.4.4.  Test for belt anchorages located wholly within the seat structure or  dispersed between the 

vehicle structure and the seat structure 

5.4.4.1. The tests specified in points 5.4.1, 5.4.2 and 5.4.3 shall be perfo rmed, as appropriate, at 

the same time superimposing for each seat  and for each group of seats a force as stated below. 

▼M4 

5.4.4.2. The loads indicated in  Items 5.4.1, 5.4.2 and 5.4.3 shall be supplemented by a force equal to 20 times the weight of the complete seat. In the case of vehicles in categories M2 and N2 this force must be equal to 10 times the weight of the complete seat; for vehicles in  category M3 and N3 it must be equal to 6,6 times the weight of the complete seat.  汽车安全带英文文献和中文翻译(13):http://www.751com.cn/fanyi/lunwen_45011.html