Abstract
Four- wheel driver vehicles have recently become widely used for their enhanced safety in a variety of road conditions on the highway and snow- covered, wet, and gravel- covered roads. It is well known that four- wheel drive vehicles are superior in maneuverability to two- wheel drive vehicles. This paper deals with the theoretical approach in determining the difference in movements between two- wheel and four- wheel drive vehicles during cornering with varying tire- to- road- surface friction coefficients and wheel loads, experiments were carried out on paved and snow- covered roads using the two types of vehicles.