| 摘要 |
Travel guidance devices, methods, and programs acquire map data including a road network, a position of a vehicle, and a planned travel route of the vehicle. Based on the acquired information, the devices, methods, and programs determine whether there is a planned entry branch that the vehicle is projected to enter located ahead of the vehicle. When the planned entry branch is ahead of the vehicle, the devices, methods, and programs determine whether there is a no-lane-change zone between the vehicle and the planned entry branch. When the no-lane-change zone is located between the vehicle and the planned entry branch, the devices, methods, and programs set guidance content related to a lane change of the vehicle based on a position of the no-lane-change zone. The devices, methods, and programs generate guidance using the set guidance content and communicate the generated guidance to a user of the travel guidance device. |
| 主权项 |
1. A travel guidance device, comprising:
a current position detection unit; and a controller that:
acquires map data including a road network;acquires a position of a vehicle from the current position detection unit;acquires a planned travel route of the vehicle;based on the acquired position of the vehicle, the acquired planned travel route, and the acquired map data, determines whether there is a planned entry branch that the vehicle is projected to enter located ahead in an advancing direction of the vehicle;when the planned entry branch is located ahead of the vehicle, determines whether there is a no-lane-change zone specified in the road network between the vehicle and the planned entry branch based on the acquired map data;when the no-lane-change zone is located between the vehicle and the planned entry branch, sets guidance content related to a lane change of the vehicle based on a position of the no-lane-change zone;generates guidance using the set guidance content; andcommunicates the generated guidance to a user of the travel guidance device. |
