Guideway Slot Routing for Autonomous Traffic Flow Control
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Solution Overview
Problem
Existing traffic control systems struggle to optimize traffic flow and avoid congestion, particularly in scenarios involving autonomous vehicles and complex routing requirements.
Innovation Solution
A traffic control system comprising a control server, guideway with virtual slots, and beacon devices that transmit control signals to vehicles to maintain position within slots, optimizing route planning to avoid occupied waypoints and ensure efficient traffic flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a traffic control system uses centralized routing optimization to avoid congestion, then traffic flow efficiency is improved, but system complexity and computational requirements increase
Solution Approach 1:
The guideway is divided into discrete slots that move along the route, creating segmented virtual spaces for vehicle assignment. This segmentation allows the control system to manage traffic flow in manageable units rather than treating the entire guideway as a continuous system, reducing computational complexity while maintaining routing optimization capabilities
Solution Approach 2:
Virtual slots act as intermediary elements between the control server and physical vehicles. The slots serve as a intermediary layer that simplifies the control problem by providing pre-defined spatial units that vehicles can be assigned to, reducing the direct complexity of vehicle-to-guideway coordination
2Reliability
If the system assigns specific time slots to vehicles to prevent congestion, then collision avoidance and safety are improved, but travel time flexibility decreases
Solution Approach 1:
The slot assignment system is dynamic rather than static. Slots move along the guideway at the slot speed and can be reassigned in real-time based on traffic conditions. This dynamic approach allows the system to maintain collision avoidance while adapting to changing travel time requirements and traffic patterns
Solution Approach 2:
The control server determines routes and assigns slots in advance before vehicles enter the guideway. By performing preliminary routing and slot assignment, the system ensures collision-free paths are established beforehand while still allowing flexibility in how vehicles are scheduled into available slots based on real-time conditions
3Measurement precision
If beacon devices continuously transmit control signals to maintain vehicle position, then positioning precision is improved, but energy consumption increases
Solution Approach 1:
Beacon devices transmit control signals at periodic intervals rather than continuously. The beacons transmit signals to vehicles at regular time intervals, providing sufficient positioning information to maintain slot adherence while significantly reducing energy consumption compared to continuous transmission
Solution Approach 2:
Vehicles use the periodic beacon signals to self-correct their position within slots without requiring continuous active control. The vehicles autonomously adjust their speed and position based on the periodic feedback from beacons, reducing the need for high-frequency communication and energy expenditure
Data Source
AI summary
A system and method are disclosed herein that are configured to direct traffic along a guideway. The system and method are configured to allow a user to enter the guideway and travel along an optimized route based on a comparison of routes between a predetermined origin and destination. Various slots are defined along the guideway and the control server is configured to direct vehicles into predetermined slots based on tracking information for the vehicles.