Intersection Travel Guidance Paths for Overlap-Free Vehicle Routing
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Solution Overview
Problem
Existing vehicle travel assistance devices do not effectively manage overlapping travelable areas for multiple vehicles, leading to inefficient traffic flow.
Innovation Solution
A travel assistance device that specifies entry and exit nodes at intersections and sets virtual connection objects to guide vehicles, avoiding conditions that could lead to overlapping or close proximity, particularly for opposing right-turn and left-turn combinations, ensuring smooth traffic flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If virtual connection objects are set to guide multiple vehicles through an intersection, then traffic flow is improved, but overlapping or close proximity of virtual connection objects may occur leading to unsafe vehicle paths
Solution Approach 1:
The system applies preliminary anti-action by proactively preventing harmful overlaps between virtual connection objects before they occur. The setting unit checks combinations of virtual connection objects in advance and configures them to avoid overlapping or close proximity, thereby eliminating the potential hazard before it can affect vehicle paths
Solution Approach 2:
The system performs preliminary action by pre-configuring virtual connection objects with avoidance conditions before vehicles actually traverse the intersection. The setting unit establishes safe spatial relationships between virtual connection objects for all possible vehicle combinations, ensuring that when vehicles follow these pre-set paths, they maintain safe lateral distances
2Reliability
If virtual connection objects are configured to avoid overlapping, then vehicle path safety is improved, but traffic flow efficiency may deteriorate due to restricted path options
Solution Approach 1:
The system applies parameter changes by dynamically adjusting the spatial parameters (positions and shapes) of virtual connection objects based on the specific combination of vehicles present. The setting unit modifies the configuration of virtual connection objects to satisfy avoidance conditions while still providing adequate travel paths, thereby maintaining safety without unnecessarily restricting traffic flow
Solution Approach 2:
The system applies partial action by selectively applying avoidance conditions only to specific combinations of virtual connection objects where simultaneous vehicle traffic may occur. The setting unit identifies which combinations require avoidance (such as opposing right-turn combinations or left-turn combinations) and applies constraints only to those cases, allowing other combinations to proceed without restriction
Data Source
AI summary
A travel assistance device includes a specifying unit configured to specify an entry node of an entry lane connected to an intersection and an exit node of an exit lane connected to the intersection based on map data including information of the intersection and a setting unit configured to set virtual connection objects each of which is a guide for the vehicle to travel and connects the entry node and the exit node. The setting unit is further configured to set a combination of the virtual connection objects where simultaneous traffic by vehicles may occur to not satisfy an avoidance condition except for a combination of the virtual connection objects where the avoidance condition is inevitably satisfied.