A route provision apparatus for providing a route to a vehicle including a transceiver; a sensor interface configured to receive sensing information from one or more sensors; and a processor configured to identify a lane of the vehicle, estimate, using map information received from a navigation system and not from the server based on a communication state with the server satisfying a preset condition, an optimal route for the vehicle in lane units, generate autonomous driving visibility information by fusing the sensing information with the optimal route, and fuse dynamic information related to a movable object with the autonomous driving visibility information to update the optimal path based on the dynamic information, and wherein the sensing information is fused with the map information to generate a Simultaneous Localization and Mapping (SLAM) map.