TRAVEL ROUTE GUIDANCE DEVICE AND TRAVEL ROUTE GUIDANCE METHOD

The traveling route guidance device includes a route acquisition unit that acquires a plurality of traveling routes from a current position of the vehicle to a destination, a gradient distribution acquisition unit that acquires a distribution of a gradient of each road surface of the plurality of traveling routes, a vehicle speed acquisition unit that acquires a vehicle speed of another vehicle traveling on each of the plurality of traveling routes, a load estimation unit that estimates a load of the vehicle when traveling on the traveling route based on the distribution of the gradient for each traveling route and the vehicle speed, and a notification unit that notifies the plurality of traveling routes and the load to an occupant of the vehicle.