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Analysis of GPS route information to improve road sign effectiveness

IP.com Disclosure Number: IPCOM000184990D
Original Publication Date: 2009-Jul-07
Included in the Prior Art Database: 2009-Jul-07
Document File: 3 page(s) / 44K

Publishing Venue

IBM

Abstract

This invention consists of a system that aggregates satellite navigation route logs from many different navigation devices, and which analyses these logs to make a statistical report on the final destinations of the drivers that pass through key intersections. With this report, local entities can decide which are the important destinations to indicate with road signs, and which road signs are perhaps less important because, statistically, few people use this route to get to those destinations. It uses the statistical data of satellite navigation users to optimise the road sign effectiveness for drivers that do not use satellite navigation devices.

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Analysis of GPS route information to improve road sign effectiveness

Finding one's way to a destination or a point-of-interest for a vehicle driver has become much simpler recently with GPS satellite navigation systems. However, not everyone has the possibility to purchase such devices, and so the majority of travellers are still using the traditional methods (maps and road signs) to navigate to their destination.

    Road signs are not always optimal. A driver likes to get confirmation that he/she is on the right route, but sometimes at important intersections these confirmation road signs are missing, leading to hesitation while in the intersection and perhaps obstructing other traffic. At other intersections the problem is just the opposite; there are too many road signs, and it is extremely difficult for a driver to absorb all of the information without slowing down or stopping.

    The entities responsible for the placement of road signs have little information to allow them to know what signs are important, and what signs are perhaps not necessary. There is little to help them understand what are the destinations of the drivers that pass through a particular intersection. This is valid for both city/town destinations and for local amenities or tourist attractions.

    This invention consists of a system that aggregates satellite navigation route logs from many different navigation devices, and which analyses these logs to make a statistical report on the final destinations of the drivers that pass through key intersections. With this report, local entities can decide which are the important destinations to indicate with road signs, and which road signs are perhaps less important because, statistically, few people use this route to get to those destinations. It uses the statistical data of satellite navigation users to optimise the road sign effectiveness for drivers that do not use satellite navigation devices.

    For each map, there are a number of 'decision points' where the navigation device can suggest to take one option or another. The route that is suggested to get from one decision point to another is fixed, for each possible user preference combination (avoid motorways, etc.). Satellite navigation systems will calculate the route based on the destination and on the user preferences.

    Each decision point is a node in which the navigation system has to decide whether to take one route or another to...