Abstract: A vehicle control apparatus for a vehicle includes a monitoring sensor and a brake apparatus. The vehicle control apparatus determines whether a pre-preceding vehicle is present in front of a preceding vehicle in front of an own vehicle in a vehicle advancing direction. In response to the pre-preceding vehicle is determined to be present in front of the preceding vehicle, the vehicle control apparatus compares a first required deceleration required to cause the own vehicle to travel to follow the preceding vehicle based on a monitoring result of the monitoring sensor and a second required deceleration required to cause the own vehicle to travel to follow the pre-preceding vehicle based on a monitoring result of the monitoring sensor, and controls the brake apparatus to bring deceleration of the own vehicle closer to the second required deceleration in response to the second required deceleration being greater than the first required deceleration.

Abstract: A map display device includes: a processor that defines a coordinate system on a map including element polygons showing constituent elements of an urban map; a processor that sets coordinates located inside the element polygons as inner coordinates and sets coordinates located outside the element polygons as outer coordinates; a processor that calculates, for each coordinate in the coordinate system, a moving average value; a processor that resets each of the outer coordinates which has the moving average value larger than a predetermined value as the inner coordinate; a processor that sets, as an urban polygon, a polygon along an outer periphery of a region formed of an aggregate of the set and reset inner coordinates; and a processor that enables the urban map to be displayed when a current location is present inside the urban polygon.

Abstract: A vehicle running control apparatus includes a following distance control unit for maintaining a following distance between an own vehicle on which the vehicle running control apparatus is mounted and a preceding vehicle, an accelerating unit for accelerating the own vehicle at a set acceleration so that a speed of the own vehicle reaches a set speed when the preceding vehicle is lost, and an acceleration suppressing unit configured to suppress acceleration of the own vehicle by the accelerating unit on condition that the preceding vehicle and the own vehicle are under an acceleration suppression condition that an allowance time to collision is smaller than a predetermine lower limit at a moment of loss of the preceding vehicle.

Abstract: A vehicle driving control apparatus is provided for controlling an own vehicle to track a target vehicle. The vehicle driving control apparatus includes: (1) means for acquiring an actual relative speed of the target vehicle to the own vehicle; (2) means for detecting occurrence of an event which causes the actual relative speed to discontinuously change; (3) means for setting a target acceleration of the own vehicle based on the product of a relative speed gain and a tracking relative speed when the own vehicle tracks the target vehicle, the tracking relative speed being normally set to the actual relative speed; and (4) means for correcting, upon detection of occurrence of the event by the detecting means, the tracking relative speed so as to gradually increase the absolute value of the tracking relative speed from a value that is less than the absolute value of the actual relative speed.

Abstract: A vehicle driving control apparatus is provided for controlling an own vehicle to track a target vehicle. The vehicle driving control apparatus includes: (1) means for acquiring an actual relative speed of the target vehicle to the own vehicle; (2) means for detecting occurrence of an event which causes the actual relative speed to discontinuously change; (3) means for setting a target acceleration of the own vehicle based on the product of a relative speed gain and a tracking relative speed when the own vehicle tracks the target vehicle, the tracking relative speed being normally set to the actual relative speed; and (4) means for correcting, upon detection of occurrence of the event by the detecting means, the tracking relative speed so as to gradually increase the absolute value of the tracking relative speed from a value that is less than the absolute value of the actual relative speed.

Abstract: A map display device includes: a processor that defines a coordinate system on a map including element polygons showing constituent elements of an urban map; a processor that sets coordinates located inside the element polygons as inner coordinates and sets coordinates located outside the element polygons as outer coordinates; a processor that calculates, for each coordinate in the coordinate system, a moving average value; a processor that resets each of the outer coordinates which has the moving average value larger than a predetermined value as the inner coordinate; a processor that sets, as an urban polygon, a polygon along an outer periphery of a region formed of an aggregate of the set and reset inner coordinates; and a processor that enables the urban map to be displayed when a current location is present inside the urban polygon.

Abstract: A vehicle running control apparatus includes a following distance control unit for maintaining a following distance between an own vehicle on which the vehicle running control apparatus is mounted and a preceding vehicle, an accelerating unit for accelerating the own vehicle at a set acceleration so that a speed of the own vehicle reaches a set speed when the preceding vehicle is lost, and an acceleration suppressing unit configured to suppress acceleration of the own vehicle by the accelerating unit on condition that the preceding vehicle and the own vehicle are under an acceleration suppression condition that an allowance time to collision is smaller than a predetermine lower limit at a moment of loss of the preceding vehicle.

Abstract: A storage medium stores map data divided into unit areas. A control circuit indicates a map on an image display unit according to the map data. The map data includes name records, which respectively correspond to names to be indicated in the map. Each of the name records includes information specifying a character string of corresponding one of the names and information specifying an indication range of the character string in the map. An updating unit updates a part of the unit areas of the map data. An extracting unit extracts a pair of the same character strings, which are overlapped and indicated in the map or closely indicated in the map, with reference to the name records, after update of the part of the unit areas of the map data. A prohibiting unit prohibits indication of one of the extracted pair in the map.

Abstract: A storage medium stores map data divided into unit areas. A control circuit indicates a map on an image display unit according to the map data. The map data includes name records, which respectively correspond to names to be indicated in the map. Each of the name records includes information specifying a character string of corresponding one of the names and information specifying an indication range of the character string in the map. An updating unit updates a part of the unit areas of the map data. An extracting unit extracts a pair of the same character strings, which are overlapped and indicated in the map or closely indicated in the map, with reference to the name records, after update of the part of the unit areas of the map data. A prohibiting unit prohibits indication of one of the extracted pair in the map.