Accidents Due to Detachments of Road Vehicle Wheels and Trailers

摘要

In this survey the main objectives were to find information on unfastening oftires in heavy vehicles and separations of towing vehicle and trailer. The main source of information was data base of Finnish Police Force (RIKI) from year 1998-1999. Fatal accidents were also looked at from Finnish road accident investigation team's records in tire unfastening accidents in the case of heavy vehicles has to be pointed out always the possibility of large and even fatal damage for other road users. In typical tire unfastening accident twin wheel from left side of trailer rolls over to the lane of oncoming vehicles. Tire unfastening accidents seem to be more common during the winter time. This is probably because of snow banks. Snow banks prevent tires from rolling freely from the road after this tire hits oncoming vehicles and afterwards the accident comes to police records. The vehicle of which tires have been unfastened will often keep its stability and normally damages are minor. There are also signs that temperature and inclination of road surface has an effect in tire unfastening accidents.