| 摘要 |
PROBLEM TO BE SOLVED: To provide a junction point guide taking into consideration the distance of parallel running sections of a main lane and a junction traffic lane at a junction point, when a self-vehicle approaches the junction point, and to enable easy prediction for the state of the junction point to the driver. SOLUTION: An alert for danger that can be predicted from information regarding the junction point and short distance of the parallel running section is provided by an enlarged guide map and voice guiding, when determination for checking whether a distance 5 of the parallel running section a main lane at a junction point and other road at the junction point is within a predetermined distance is performed, and the distance 5 is within the predetermined distance, when a self-vehicle 1 travels on a road 2 and approaches a predetermined distance point (A1 point) from the junction point of a traveling road 2 and other road 3 is determined. An alert for danger that can be predicted from information regarding the junction point and long distance of the parallel running section is provided by an enlarged guide map and voice guiding, when determination for checking whether a distance 6 of the parallel running section a main lane at a junction point and other road at the junction point lies within a predetermined distance is performed; and the distance 6 is the predetermined distance or longer, when a self-vehicle 1 travels on a road 2 and approaches a predetermined distance point (B1 point) from the junction point of a traveling road 2 and other road 4 is determined. COPYRIGHT: (C)2007,JPO&INPIT |
