Connected Vehicle Intersection Passing Using Shared Position Data
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Solution Overview
Problem
Arrayed vehicles entering an intersection face difficulty in smoothly passing through due to prolonged safety checks when traffic lights change from green to yellow, leading to potential delays and increased collision risk.
Innovation Solution
Vehicles in an array communicate and share positional information to determine if they can safely pass through an intersection, reducing the safety check period by estimating rear end positions and determining if a stop space is available before stopping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vehicles perform prolonged safety checks when traffic lights change from green to yellow, then collision risk is reduced, but passage efficiency through intersection deteriorates
Solution Approach 1:
The system performs preliminary safety checks and determines passage ability before the traffic light changes from green to yellow. By using communication devices to share positional information among arrayed vehicles and calculating whether the intersection can accommodate all vehicles, the system makes advance decisions about passage, eliminating the need for prolonged checks at the moment of light change.
Solution Approach 2:
The system establishes a feedback loop where vehicles continuously exchange positional information through communication devices. The determination result regarding intersection passage ability is fed back to all vehicles in the array, enabling coordinated decision-making and real-time adjustment of passage strategies based on current traffic conditions.
2Reliability
If vehicles conduct thorough safety checks before entering intersection, then safety is improved, but safety check period is prolonged
Solution Approach 1:
The system merges the safety check processes of multiple arrayed vehicles into a unified determination. Instead of each vehicle independently conducting separate safety checks, the communication device combines positional information from all vehicles, and the control device performs a single comprehensive assessment of whether the intersection can safely accommodate the entire array, significantly reducing total check time.
Solution Approach 2:
Safety determinations are made in advance before the traffic light changes color. The system uses current positional data to predict whether all vehicles can clear the intersection safely, making the safety check complete before the green-to-yellow transition begins, thus minimizing the time vehicles must wait.
3Speed
If vehicles determine passage ability independently, then decision speed is improved, but accuracy of safety determination deteriorates
Solution Approach 1:
The system uses feedback from communication devices to continuously update positional information of all arrayed vehicles. This shared information feedback loop enables each vehicle to make accurate safety determinations based on real-time data from the entire array, maintaining high accuracy while allowing for rapid decision-making since all vehicles receive the same coordinated determination result.
Data Source
AI summary
A vehicle that is a first vehicle includes a communication device configured to communicate with a second vehicle, a position acquisition device configured to acquire a position of the first vehicle, a locator device configured to determine a position of a preceding vehicle located ahead of the first vehicle in a traveling direction, and a control device including one or more processors and one or more memories coupled to the one or more processors. The one or more processors are configured to execute a process including: when an intersection is present ahead of the first vehicle in the traveling direction, determining whether the first vehicle is able to pass through the intersection based on positional information of the preceding vehicle; and, when determination is made that the first vehicle is able to pass through the intersection, transmitting positional information of the first vehicle at the intersection to the second vehicle.