Autonomous Vehicle Pull-Over Planning Under Safety and Traffic Constraints
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Solution Overview
Problem
Vehicles face unsafe or impractical operating conditions due to weather, traffic, system failures, or component deterioration, leading to potential traffic disruptions and safety risks when immediate stops are made.
Innovation Solution
A vehicle monitoring system determines the necessity of a pull-over based on constraints, allowing continued operation until an optimal location is reached, using redundant components and teleoperator guidance to minimize traffic congestion and ensure safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle stops immediately when a condition arises, then safety is improved, but traffic congestion and disruption increase
Solution Approach 1:
The system performs preliminary actions by detecting unsafe conditions early and proactively identifying suitable pull-over locations before the vehicle needs to stop. The monitoring component continuously assesses vehicle conditions, weather, and traffic, while the planner component pre-identifies safe stopping locations along the route, allowing the vehicle to maintain normal operation until reaching the predetermined location.
Solution Approach 2:
The system introduces an intermediary planning component that mediates between the immediate safety requirement to stop and the need to maintain traffic flow. The planner component acts as a mediator by selecting optimal pull-over locations that balance safety requirements with minimal traffic disruption, using criteria such as traffic volume, road geometry, and proximity to the vehicle's current position.
2Productivity
If the vehicle continues operating under compromised conditions, then traffic flow is maintained, but safety risks increase
Solution Approach 1:
The system dynamically adjusts the vehicle's operating state based on real-time conditions. The monitoring component continuously evaluates vehicle system conditions, weather, and traffic, while the planner component dynamically selects appropriate pull-over locations. This dynamic approach allows the vehicle to maintain normal operation under safe conditions while automatically initiating a controlled stop when unsafe conditions are detected, optimizing both safety and traffic flow.
3Reliability
If the vehicle pulls over immediately when a condition arises, then safety is improved, but time loss increases
Solution Approach 1:
The system performs preliminary identification of multiple suitable pull-over locations along the vehicle's route before an emergency occurs. When a stop is necessary, the vehicle can proceed to the nearest pre-identified location rather than searching for a safe stopping point during the emergency, minimizing time loss while ensuring safety.
4Measurement precision
If the system uses redundant components and teleoperator guidance, then decision accuracy is improved, but system complexity increases
Solution Approach 1:
The system introduces a teleoperator as an intermediary human decision-maker who receives information from the automated monitoring and planning systems and makes final decisions about pull-over necessity and location. This intermediary approach combines automated data collection and analysis with human judgment, improving decision accuracy while managing system complexity by having the teleoperator handle only critical decisions rather than requiring fully autonomous complex decision-making.
Data Source
AI summary
Techniques for intelligent vehicle pull over in response to detecting abnormal conditions. The techniques may include determining a presence of a condition necessitating that a vehicle cease from operating on a road surface and determining a constraint associated with the vehicle ceasing from operating on the road surface. In some examples, the constraint may be a time constraint, a geographical constraint, and/or the like. The techniques may also include sending, to a planner component of the vehicle, an indication that the vehicle is to cease from operating on the road surface in accordance with the constraint. Additionally, based at least in part on a determination that the planner component acknowledged the indication in accordance with the constraint, the techniques may include refraining from causing the vehicle to stop on the road surface such that the vehicle impedes a flow of traffic.