V2X Traffic Gap Coordination for Multi-Lane Driving Maneuvers
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Solution Overview
Problem
Driving maneuvers that require multiple lanes, such as crossing a multi-lane road or turning, are dangerous and often result in long waiting times due to the risk of vehicles colliding with a quasi-stationary obstacle, especially when not all vehicles are equipped with advanced communication systems.
Innovation Solution
A method utilizing V2X communication to coordinate vehicles, where a first vehicle requests a traffic flow gap by sending periodic request signals to upstream vehicles, which respond with signaling signals, and if sufficient vehicles comply, they block lanes by reducing speed or stopping, designating a maneuver leader to communicate the gap's characteristics to the first vehicle, allowing safe and efficient lane usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vehicle performs a driving maneuver spanning multiple lanes without coordination, then the maneuver can be completed, but the risk of collision increases and waiting time increases
Solution Approach 1:
The system performs preliminary actions by sending request signals to upstream vehicles before the maneuvering vehicle enters the gap. Upstream vehicles receive these signals in advance and prepare to create a traffic flow gap by reducing speed or stopping, ensuring the maneuver can be completed safely without prolonged waiting.
Solution Approach 2:
The system implements feedback through periodic request signals sent to upstream vehicles and signaling signals in response. The maneuvering vehicle receives feedback about the traffic flow gap status, and upstream vehicles receive feedback about the maneuvering vehicle's position and speed, enabling coordinated adjustment of speeds and positions.
2Reliability
If V2X communication is used to coordinate vehicles for a driving maneuver, then safety is improved, but the system complexity increases
Solution Approach 1:
The system segments the coordination task into distinct functional modules: request signal transmission, signaling signal reception, traffic flow gap detection, speed adjustment, and position coordination. Each module handles a specific aspect of the maneuver, making the overall complex V2X system more manageable and implementable.
Solution Approach 2:
The V2X communication system performs multiple functions: it transmits request signals, receives signaling signals, detects traffic flow gaps, coordinates speeds, and manages positions. By making the communication system multi-functional, the patent reduces the need for separate dedicated systems for each function, thereby managing complexity while achieving comprehensive safety coordination.
3Productivity
If multiple vehicles coordinate to create a traffic flow gap, then the maneuver can be completed efficiently, but the coordination complexity increases
Solution Approach 1:
Upstream vehicles autonomously determine their own participation in creating the traffic flow gap by evaluating the request signals and their own driving conditions. Each vehicle independently adjusts its speed and position based on the coordinated protocol, reducing the need for centralized control and simplifying the coordination mechanism while maintaining efficient multi-vehicle cooperation.
Data Source
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AI summary
The invention relates to a method for carrying out a driving manoeuvre for creating a gap in the traffic flow, which is multiple lanes (16a to 16f) wide, involving a first vehicle (10) and a plurality of second vehicles (18a to 18f). The first vehicle (10), which requests the gap in the traffic flow, periodically sends corresponding request signals at least to a plurality of second vehicles (18a to 18g). The second vehicles (18a to 18g) that intend to comply with the request, send out corresponding signalling signals. As soon as a sufficient minimum number of second vehicles (18a to 18g) that intend to comply with the request can be determined, the second vehicles (18a to 18f) participating in the driving manoeuvre for creating the gap in the traffic flow are informed. The second vehicles (18a to 18f) participating in the driving manoeuvre agree on the beginning of the driving manoeuvre and mutually coordinate their trajectories. One of the second vehicles is designated as the manoeuvre leader (18b) and transmits at least one characteristic of the gap in the traffic flow to the first vehicle (10).