| 摘要 |
A navigation system for providing navigation directions to a user comprising an input for receiving user commands to define a navigation route and processing means arranged to determine navigation directions relating to the user selected route. An output is arranged to output navigation directions to the user wherein the processing means is arranged to determine the boundary of the navigation route and the output is arranged to output an indication signal to mark the boundaries of the navigation route. The projection system may project lane markers 12 on the ground to define the boundaries of the route. A head up display (HUD) 14 may also display the lane markers. Other route features such as bends, corners, junctions and width restrictions may be displayed. The width of the navigation route may be determined by analysing aerial or satellite imagery or a look-up table. The display may be used when the route has been obscured by poor weather conditions. |
