Abstract: A map information assessment device has a processor configured to match a plurality of first zones representing a first road in a first map, with second zones representing a second road in a second map, the matching being made by using locations on the second road that are closest to the starting points of the first zones as the starting points, and using zones having the same lengths as the first zones, as the second zones corresponding to the first zones, to calculate zone adjacent distances between the end points of the second zones and the starting points of other second zones adjacent to those second zones, and to determine that positional information for the first road in a first zone is different from positional information for the second road in a second zone corresponding to that first zone, when the zone adjacent distance is greater than a threshold.

Abstract: A route selection device includes a processor configured to identify a position of a lane on which a vehicle is traveling; search for candidate partial routes leading from a current position of the vehicle to a waypoint on a route leading from a start point to a destination, the waypoint being located between the current position and the destination; determine a lane change location where a lane change will be made for each of the candidate partial routes found by searching; and select, as a partial route, a candidate partial route having a minimum total score regarding the lane change location from the candidate partial routes found by searching. The score is weighted depending on the position of the determined lane change location or whether a lane change at the lane change location can be controlled by a travel controller.

Abstract: A road zone assessment device has a processor configured to select a first road zone from among multiple first road zones representing a first road associated with a vehicle navigation route, and connected with a second road zone representing a second road different from the first road, on a location-estimating map used for a vehicle, to determine whether or not the navigation route extends from the selected first road zone to the second road zone, to identify other first road zone associated with the navigation route from the selected first road zone forward on the destination location side of the navigation route, and to release association between the other first road zone and the navigation route when the selected first road zone is connected with the second road zone and the navigation route extends from the selected first road zone to the second road zone.

Abstract: A map information assessment device has a processor configured to detect the end road zone located furthest on the destination location side, among the multiple road zones on the navigation route, to determine whether or not the end road zone is connected to another road zone on the destination location side, to detect the end road link on the navigation route which is associated with the end road zone when the end road zone is connected with another road zone on the destination location side, and to determine whether or not the end road link is connected with another road link representing the navigation route, which is not associated with the road zone on the destination location side, and to attach a predetermined attribute to the end road zone when the end road link is connected with another road link representing the navigation route.

Abstract: A vehicle controller includes a memory configured to store map information including information on a predetermined area used in autonomous driving control of a vehicle; and a processor configured to: refer to the map information to identify an autonomous-driving practicable point at which a planned travel route from the current position of the vehicle outside the predetermined area to a destination of the vehicle enters the predetermined area, calculate a manual-driving section length from the current position of the vehicle to the autonomous-driving practicable point along the planned travel route, and notify the calculated manual-driving section length to a driver of the vehicle via a notification device provided in the interior of the vehicle.

Abstract: A road zone assessment device has a processor configured to select a first road zone from among multiple first road zones representing a first road associated with a vehicle navigation route, and connected with a second road zone representing a second road different from the first road, on a location-estimating map used for a vehicle, to determine whether or not the navigation route extends from the selected first road zone to the second road zone, to identify other first road zone associated with the navigation route from the selected first road zone forward on the destination location side of the navigation route, and to release association between the other first road zone and the navigation route when the selected first road zone is connected with the second road zone and the navigation route extends from the selected first road zone to the second road zone.

Abstract: A map information assessment device has a processor configured to detect the end road zone located furthest on the destination location side, among the multiple road zones on the navigation route, to determine whether or not the end road zone is connected to another road zone on the destination location side, to detect the end road link on the navigation route which is associated with the end road zone when the end road zone is connected with another road zone on the destination location side, and to determine whether or not the end road link is connected with another road link representing the navigation route, which is not associated with the road zone on the destination location side, and to attach a predetermined attribute to the end road zone when the end road link is connected with another road link representing the navigation route.

Abstract: A map information assessment device has a processor configured to match a plurality of first zones representing a first road in a first map, with second zones representing a second road in a second map, the matching being made by using locations on the second road that are closest to the starting points of the first zones as the starting points, and using zones having the same lengths as the first zones, as the second zones corresponding to the first zones, to calculate zone adjacent distances between the end points of the second zones and the starting points of other second zones adjacent to those second zones, and to determine that positional information for the first road in a first zone is different from positional information for the second road in a second zone corresponding to that first zone, when the zone adjacent distance is greater than a threshold.

Abstract: An apparatus for identifying a road being traveled includes one or more processors configured to: compare a latest predetermined section of a trajectory of a vehicle with a first map representing roads to detect a section closest to a current position of the vehicle included in a road that matches the trajectory the best of the roads represented in the first map as a candidate for a road being traveled by the vehicle, compare a sensor signal representing environment around the vehicle with a second map representing individual lanes on roads to detect a lane being traveled by the vehicle, identify the candidate for the road as the road being traveled by the vehicle when the detected lane is included in the candidate, and identify a road including the detected lane as the road being traveled by the vehicle when the detected lane is not included in the candidate.

Abstract: A travel controller identifies a current lane on which a vehicle is traveling in a first lane zone traveled by the vehicle and including lanes, and detects a non-lane zone within a predetermined distance ahead of a current position of the vehicle. The non-lane zone lacks lanes and lies between the first lane zone and a second lane zone including fewer lanes than the first lane zone. Of the lanes included in the second lane zone, the travel controller identifies a lane having a start point whose distance from an end point of the current lane is the shortest, and preferentially selects, as a route in the non-lane zone, a route connecting the end point of the current lane and the start point of the lane identified in the second lane zone.

Abstract: A travel controller detects a non-lane zone within a predetermined distance ahead of a current position of a vehicle. The non-lane zone lacks lanes. The travel controller controls travel of the vehicle in the non-lane zone so as to keep the position of the vehicle relative to the width of a whole road. When an expected position of the vehicle at the end of the non-lane zone straddles a lane line, the travel controller controls travel of the vehicle so as to move to a lane having a larger overlap with the vehicle, prior to control of travel of the vehicle to keep the position of the vehicle relative to the width of the whole road.

Abstract: A route selection device includes a processor configured to identify a position of a lane on which a vehicle is traveling; search for candidate partial routes leading from a current position of the vehicle to a waypoint on a route leading from a start point to a destination, the waypoint being located between the current position and the destination; determine a lane change location where a lane change will be made for each of the candidate partial routes found by searching; and select, as a partial route, a candidate partial route having a minimum total score regarding the lane change location from the candidate partial routes found by searching. The score is weighted depending on the position of the determined lane change location or whether a lane change at the lane change location can be controlled by a travel controller.

Abstract: A car navigation device obtains a current position of a vehicle through a position detector, receives road traffic information through a VICS receiver. When the current position is included in congested points or congested sections of the road traffic information, a vehicle speed is not reflected on computation of an average vehicle speed even if the vehicle runs at a slow speed without stop.