Samenvatting
Since 1980 about 180 impact attenuators with crumpling tubes (RIMOB) are constructed in the Netherlands. The basic concept is a configuration of tubes which get crumpled on impact. It is very easy to replace damaged parts, which makes maintenance relatively cheap. The RIMOB is meant for the protection of e.g. gantry posts on motorway exits and piers of viaducts. In this report an inventory is made of a number of necessary data for an evaluation of the use and efficiency of the RIMOB. See also B 23840, 22615 and 30716.