EN 12642 XL

The European Standard DIN EN 12642 describes the minimum requirements for the strength of vehicle bodies. It applies to all structural elements (side walls, front and back walls) of trucks and trailers with a maximum permitted gross vehicle weight exceeding 3.500 kg.

Testing of a trailer for compliance to the normal (Code: L) and reinforced structures (code: XL, higher test loads), can be performed by static or dynamic tests. Vehicles, whose structure has been approved for the EN 12642 XL regulation, require less or no additional lashing of their loads. This simplifies the loading and unloading process, saving time and therefore providing an economic benefit for the operator.


To statically test a trailers’ body for compliance to the EN 12642 XL regulation, following test loads (absolute values) are required for the determination of the structure firmness with a payload of 27.000 kg:

  DC 9.5 EN 12642 L EN 12642 XL
Front wall (0,5 x payload) 13.500 daN 5.000 daN 13.500 daN
Side wall (0,4 x payload) 8.100 daN 8.100 daN 10.800 daN
Rear wall (0,3 x payload) 8.100 daN 3.100 daN 8.100 daN

To perform a static test, a wall needs to be installed in the trailer. A balloon is then inflated between the wall and the side-curtain, to simulate a lateral pressure of 10.800 kg.

The EN 12642 XL regulation stipulates that the maximum body deformation must be less than 30 cm.

Once the balloon is inflated to the stipulated lateral pressure of 10.800 kg, the trailers’ body structure deformation is measured. With Carapax, this deformation is within the 30 cm limit.


A dynamic test is performed by driving with a fully loaded trailer on an airfield. The EN 12642 XL regulation stipulates that 2 different driving tests are to be performed 3 times one after another. For the test to succeed, the trailers’ body structure must remain fully functional in all aspects once all driving tests are finished. During these tests, following forces are to be obtained at each driving test:

  • Deceleration of 0.8 g in the driving direction
  • Lateral acceleration of 0.5 g
  • Lane change test with 0.5 g
  • Backward acceleration of 0.5

Following videos show how these tests are performed with a trailer loaded with 27.000 kg of beverages and with a CARAPAX roof curtain installed on the sliding roof.