As an alternative to lateral wedging timber, special securing appliances of steel or nodular east
iron construction are approved which must guarantee equal effectiveness in crosswise securing.
However, this includes the NS special securing appliance of modular cast iron (see Figure 5).
NS special securing appliance (measurements in mm)
Wheeled vehicles (see paragraph 5.e.) for which chocks and blocks for lengthwise and crosswise
securing as well as their tie-down arrangements, must conform with the provisions laid down in
Annex II to RIV. Special types of steel chocked (Figure 1) are recommended for securing
lengthwise wheeled vehicles or more than ten tons.
- 5 -
Change 4 AA-7