If!a!vehicle!leaves!the!onDroad,!and!enters!the!terrain,!its!movement!is!determined!by!the!physical!and! mechanical!laws!of!terrainDvehicle!interaction.!The!problem!with!the!runDoffDroad!accidents!is!that!the! effect! of! the! soil! physical! properties! are! not! known! clearly,! so! that! in! many! cases! only! approximate! results! can! be! provided! by! the! accident! analysts.! The! objects! of! the! project! were! to! create! a! soilD database,!and!determine!the!friction!coefficient!between!the!vehicle!body!and!the!terrain!surface.