Roundabout Light Scale Safety System for Vehicle Speed Detection

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Solution Overview

Problem

Existing traffic roundabout systems rely on traffic lights for entry decisions, neglecting the speed and direction of oncoming vehicles, which can be unsafe and inefficient.

Innovation Solution

Implement sensors to detect vehicle speed and direction within the roundabout, using a moving light scale to indicate safety to entering drivers through a light array that matches the speed and direction of approaching vehicles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If traffic lights are used to control roundabout entry, then traffic flow can be regulated, but drivers cannot obtain information about oncoming vehicle speed and direction

Engineering Contradiction:

Improveinformation about oncoming vehicle speed and directionVSAvoidsystem complexity

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The patent introduces sensors as intermediary devices that detect oncoming vehicles and transmit information to the control system. These sensors act as mediators between the physical vehicle and the information processing system, enabling the roundabout to 'sense' vehicle presence, speed, and direction without requiring direct communication between vehicles

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the mechanical/visual observation method (drivers manually assessing traffic conditions) with an automated sensor-based detection system. The sensors electronically detect vehicle parameters and the control system processes this data to generate appropriate visual signals, substituting human judgment with automated sensing and processing

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If drivers rely on traffic lights for entry decisions, then traffic flow is controlled, but driver safety is compromised due to lack of real-time vehicle information

Engineering Contradiction:

Improvedriver safetyVSAvoiddriver decision-making

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent implements a feedback mechanism where sensors continuously monitor oncoming vehicles and provide real-time information to the control system, which then displays visual signals to drivers. This closed-loop feedback system ensures drivers receive current, accurate information about traffic conditions, enabling safer and more informed entry decisions

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent uses color changes in visual signals (e.g., green LED for safe entry, red LED for unsafe entry) to communicate complex traffic information in an intuitive, easily perceptible manner. The color transitions provide immediate, unambiguous feedback to drivers about whether it is safe to enter the roundabout, simplifying the decision-making process while enhancing safety

Inventive Principle:

Principle #32Color changes

3Productivity

If yield signs are used instead of traffic lights, then continuous traffic flow is maintained, but drivers bear full responsibility for assessing safety

Engineering Contradiction:

Improvetraffic flow continuityVSAvoidsafety risk to drivers

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent performs preliminary assessment of traffic safety conditions by detecting oncoming vehicles before the driver attempts to enter the roundabout. The control system evaluates vehicle presence, speed, and direction in advance and prepares the appropriate visual signal, allowing the driver to make an informed decision without bearing full responsibility for safety assessment

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces the control system and visual signals as intermediary devices between the driver and the traffic environment. Instead of directly assessing complex traffic conditions, the driver receives processed, interpreted information from the intermediary system, which has already evaluated safety parameters and communicated the result through intuitive visual signals

Inventive Principle:

Principle #24Intermediary (Mediator)

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

Enhances driver safety by providing real-time visual cues about oncoming vehicle speed and direction, optimizing entry decisions and maintaining continuous traffic flow.

Implementation Method 1

at least one sensor for sensing the presence of vehicles traveling in the lanes of a roundabout, the sensor capturing data on the speed and direction of travel of a vehicle

Methodology Applied

Scientific EffectRadar: Radar

Data Source

PatentUS12424092B1Light scale safety system for traffic circles and traffic roundabouts

Publication Date: 2025.09.23 MARDECH SAEED

AI summary

A traffic circle or roundabout having at least one sensor for sensing the presence of vehicles traveling in the lanes of a traffic circle or roundabout, the sensor capturing data on the speed and direction of a traveling vehicle. The sensor relays the vehicle speed and direction data to a computer which is in communication with a light array embedded in a circular curb of a center island of the roundabout or traffic circle. The light array illuminates a portion of itself in front of a traveling vehicle, the length of the light array illuminated being scaled to show a lengthier illumination for high-speed vehicles and a shorter illumination for average or slow-speed vehicles.