Travel assistance device and saddle-riding-type vehicle

Abstract

Provided are a saddle-riding-type vehicle and a travel assistance device, with which it is possible to improve detection accuracy of an object and to suppress excessive detection of an object.　This travel assistance device comprises: a position detection unit (111a) that detects the travel position (DP) of an own vehicle in a travel lane (DL) on which the own vehicle is traveling; a range setting unit (111b) that sets prescribed ranges (DMa, DMb, DCa, DCb) around the own vehicle on the basis of a detection result of the position detection unit (111a); an object detection unit (111c) that detects whether or not there is an object in the prescribed ranges (DMa, DMb, DCa, DCb); and a BSI display device (12) that notifies an occupant in the own vehicle that an object has been detected by the object detection unit (111c).