Samenvatting
'fhis paper discoases lome of the broad aspects of truck andbus safety as related to various sites and types of thesevehicles. Special problems poscd by the many configurationsof vehicles are presented. The reaults of certuia barrietcollisiona tests are related and their sitnilarities to anddiffereuces from paeaenger care are discusse1. Additionallystudies on the concept of a vehicle ander-ride protectiondevice are included.