Lane Speed Profile Navigation Guidance
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Solution Overview
Problem
Current navigation systems provide limited lane-level guidance, leading to unnecessary lane changes by drivers, which can increase traffic congestion and driver stress, as they often switch lanes based on perceived faster traffic conditions without accurate information.
Innovation Solution
A method and system that determine lane speed information for each lane in a multi-lane road section, using vehicle probe data and sensor data to provide timely lane selection instructions to users, optimizing lane changes for faster travel and reducing congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If navigation systems provide lane selection instructions based on perceived traffic conditions, then drivers can make lane changes, but this leads to unnecessary lane changes and increased traffic congestion
Solution Approach 1:
The system implements feedback by continuously monitoring actual lane speeds through GPS probe data from multiple vehicles, comparing perceived traffic conditions with real measured speeds, and adjusting lane selection instructions accordingly. This closed-loop feedback mechanism prevents drivers from making lane changes based on inaccurate perceptions, thereby reducing unnecessary lane changes and improving overall traffic flow efficiency.
Solution Approach 2:
The system performs preliminary action by calculating and storing lane speed profiles in advance based on historical GPS data, then using these pre-computed profiles to provide timely lane selection instructions before drivers reach decision points. This allows the system to guide drivers proactively rather than reactively, reducing last-minute lane changes that disrupt traffic flow.
2Ease of operation
If navigation systems provide lane selection instructions without accurate speed data, then drivers receive guidance, but driver stress increases due to inaccurate information
Solution Approach 1:
The system uses feedback from actual GPS-measured lane speeds to continuously validate and update traffic condition information. By comparing perceived conditions with measured speeds, the system ensures that lane selection instructions are based on accurate, real-world data rather than estimates, thereby maintaining high reliability and reducing driver stress from contradictory information.
Solution Approach 2:
The system replaces subjective driver perception of traffic conditions with objective mechanical measurement through GPS-based speed monitoring. This substitution of mechanical measurement for human perception eliminates the inaccuracy of perceived traffic conditions, providing reliable, data-driven lane selection guidance that reduces driver stress.
3Device complexity
If navigation systems use basic traffic data for lane guidance, then the system remains simple, but lane speed measurement precision is insufficient
Solution Approach 1:
The system applies segmentation by dividing the road network into individual lane segments and calculating speed profiles for each lane separately using GPS probe data. This segmentation allows precise measurement of lane-specific speeds rather than averaging across multiple lanes, achieving high measurement precision while maintaining reasonable system complexity through modular data processing.
Solution Approach 2:
The system transitions from two-dimensional road-level traffic data to three-dimensional lane-level speed data by incorporating vertical layering information. This dimensional enhancement allows precise differentiation of speeds across multiple lanes, achieving high measurement precision without proportionally increasing system complexity through efficient data structure design.
Data Source
AI summary
Lane speed profiles are determined for each of a plurality of individual lanes of a multi-lane road section. The plurality of individual lanes are lanes for a given direction of travel. The lane speed profiles are determined using real-time vehicle probe data. The speed profiles are used to determine a timing for provide an instruction to a user of a navigation apparatus to change lane. The timing may be determined to provide a quickest route through at least a part of the road section, to increase the time available for the user to perform the lane change, or to enable a user to pass an incident affecting a lane most quickly.