The rigid items and plastic parts of a safety belt must be so located and installed that, when a power-driven vehicle is in normal use, they cannot become trapped under a sliding seat or in a door of the vehicle. If one of the parts does not meet the above requirements, it must be subjected to the cold impact test specified in 2.7.6.4. After test, if any visible cracks are present in the plastic covers or retainers of rigid items, these plastic parts shall be removed and the remaining assembly shall then be checked for its continued security.
