Method for prompting information of road condition of navigational instrument

Abstract

This invention relates to a kind of traffic information notice method for avigraph. The CPU cell in the avigraph real-time executive guidance master program cell and road diagnose subprogram cell; by map data in map database to real-time analyze current road physical format attribute, therefore to judge whether exist road condition information that need notice from a length of front distance on current; if forwardly in a length of distance it has found one road condition information needs to notice, CPU cell will executive map scale to adjust subprogram cell, and adjust digital map scale showed on the touch screen control cell, to large show corresponding site of this road condition information; CPU cell retrieve out corresponding voice prompting message and image prompting message of this road condition information from prompting message database, at last respectively output through speech output device and touch screen control cell, be able to real-time prompt all classes of road condition information for user and avoid violation.

Description

technical field [0001] The invention relates to a method for prompting road condition information of a navigator. Background technique [0002] The current navigator cannot quickly identify the road attribute information displayed on the map. For areas that the user is not familiar with, the user cannot timely know the road prohibition attributes, such as road speed limit, road height limit, one-way direction, etc. [0003] Chinese Patent Application No. 200510128541.3 discloses a route guidance device and program. In the case that the roundabout as the guidance object is a road composed of multiple lanes in the same direction of travel separated by an impassable separation zone, these Lane to guide. Specifically, output a guidance voice "Soon, turn right, please enter the slow lane" or superimpose and display an arrow indicating which lane should be selected on the intersection guidance map with lanes classified. Its shortcoming is that it is only used for guidance prompt...

AI Technical Summary

Problems solved by technology

Its shortcoming is that it is only used for guidance prompts on roundabouts, but in actual use, the road conditions are more complicated, such as road hazard information, one-way lane direction, forbidden information, road diversion, road merging, S-shaped curve, uphill and downhill , road speed limit, road height limit, lane information, roundabout entrance and exit instructions and other road attributes, these also need timely guidance and prompts to avoid violating traffic rules

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