Dynamic LED Pavement Markings for Adaptive Traffic Control
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Solution Overview
Problem
Driving in constrained visibility conditions, such as mountainous areas, can lead to hazardous situations due to limited reaction time for drivers, especially when passing slow-moving vehicles or emergency vehicles, and existing road markings do not dynamically adapt to traffic or emergency situations.
Innovation Solution
The implementation of smart roads with light-emitting diode (LED) lane dividers controlled by computer systems that adjust based on information from onboard vehicle transceivers, dynamically changing lane markings, and providing extra lanes or color cues for oversized vehicles and emergency vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional reflective lane dividers are used, then the road marking system is simple and low-cost, but the lane markings cannot dynamically adapt to traffic conditions or emergency situations
Solution Approach 1:
The patent applies dynamics by replacing static reflective lane dividers with dynamic LED-based markings that can change their state (illuminated/not illuminated) based on real-time traffic conditions, vehicle detection, and emergency situations, enabling the road marking system to adapt its behavior rather than remaining fixed
Solution Approach 2:
The patent substitutes the passive mechanical/optical system of reflective lane dividers with an active electronic control system using LEDs, controllers, and vehicle transceivers that can dynamically adjust lane markings based on detected conditions, replacing a simple reflective mechanism with an intelligent controlled system
2Reliability
If drivers rely on standard lane markings in constrained visibility areas, then the road infrastructure remains simple, but driver reaction time to hazardous conditions is insufficient
Solution Approach 1:
The system performs preliminary action by detecting vehicles and potential hazardous conditions in advance and pre-illuminating lane markings ahead of the vehicle's current position, providing advance warning to drivers about upcoming conditions or hazards before they reach critical proximity
Solution Approach 2:
The patent implements feedback by using vehicle transceivers to detect vehicle positions, speeds, and trajectories, then using this information to dynamically control LED lane markings in real-time, creating a closed-loop system that continuously adjusts road markings based on actual traffic conditions and driver behavior
3Productivity
If two-lane highways are used in mountainous areas, then the roadway infrastructure is simplified, but passing slow-moving vehicles becomes hazardous due to limited view
Solution Approach 1:
The patent uses color changes by illuminating LED lane markings in different patterns or colors to convey different meanings - such as changing from unilluminated to illuminated states, or using different colors to indicate passing zones, restricted zones, or warnings about slow-moving vehicles ahead, providing visual information to drivers about safe passing opportunities
4Speed
If emergency vehicles use standard roadways, then the roadway system remains simple, but emergency response time is delayed due to non-emergency traffic
Solution Approach 1:
The system applies preliminary action by detecting emergency vehicles in advance and pre-illuminating lane markings to clear paths or indicate preferred passing lanes before the emergency vehicle arrives, proactively preparing the roadway environment to facilitate faster emergency response rather than reacting after congestion occurs
Solution Approach 2:
The patent uses an intermediary communication system where vehicle transceivers and road controllers act as mediators between emergency vehicles and non-emergency traffic, translating emergency vehicle presence into visual lane marking signals that guide other drivers on how to yield or clear the path, facilitating coordinated emergency passage without direct vehicle-to-vehicle interaction
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces traffic accidents by enhancing driver visibility and safety through adaptive road markings that respond to vehicle types, traffic conditions, and emergency situations, improving reaction times and traffic flow.
Implementation Method 1
The smart roads can be configured with computer controllers that dynamically update the LEDs based on information broadcast by transceivers installed onboard the vehicles
Data Source
AI summary
A method includes positioning one or more roadway sensors and a plurality of a networked array of light emitting diode (LED) raised pavement markers on a road. Sensors proximate the road are associated with a network of road marking controllers that cooperate to control the LEDs as vehicles drive on the road. The LEDs operate as a networked array of roadway lane marking lights. The road marking controller(s) determine a distance between a vehicle on the road and the roadway sensor, determine a dynamic condition associated with the vehicle that changes with respect to time, and lights the plurality of LEDs based at least in part on the distance between the vehicle and the roadway sensor and the dynamic condition associated with the vehicle. Dynamic conditions for operating the LED lighting scheme can include vehicle velocity, a date, a time, a weather condition proximate the vehicle, and other factors.