VEHICULAR ORIENTATION DETECTION SYSTEM

A vehicular orientation detection system () for detecting an orientation of a vehicle () traveling a road surface (S) where magnetic markers () are laid includes sensor units () which each include a plurality of magnetic sensors arrayed in a vehicle width direction and measure a lateral shift amount with respect to the magnetic markers () and a control unit () which computes a difference between lateral shift amounts measured with any one of the magnetic markers () by front and rear sensor units () positioned at two locations separated in a longitudinal direction of the vehicle ().