Synchronized Attenuator Vehicles for Work Zone Traffic Control
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Solution Overview
Problem
Managing traffic flow in single-lane work zones is inefficient and prone to errors, as existing systems rely on manual direction by workers with signs that alternate traffic flow, which can be logistically challenging and prone to mistakes.
Innovation Solution
Implementing a system with two attenuator vehicles at either end of the work zone, equipped with cameras and wireless communication, that synchronize displays to show 'SLOW' or 'STOP' messages to control traffic flow, adjusting based on traffic volume and time intervals, and automatically switching to prevent collisions if synchronization fails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual traffic direction with signs is used in single-lane work zones, then traffic control can be implemented, but the system is inefficient and prone to human error
Solution Approach 1:
The attenuator vehicles autonomously control traffic flow without requiring human operators to manually direct traffic. The system self-manages the alternating traffic control by automatically synchronizing displays and managing the single-lane work zone traffic based on programmed logic and wireless communication between vehicles.
Solution Approach 2:
The patent replaces the manual mechanical system of workers physically directing traffic with signs with an automated electronic system. The attenuator vehicles use electronic displays, wireless communication, and automated control mechanisms to replace human manual traffic direction, eliminating human error and improving efficiency.
2Ease of operation
If manual traffic direction is used, then traffic can be controlled, but the system is logistically challenging and error-prone
Solution Approach 1:
The attenuator vehicles autonomously manage traffic control operations without requiring human intervention. The system automatically synchronizes between vehicles, manages display messages, and controls traffic flow timing, making the operation self-sufficient and eliminating logistical challenges associated with manual coordination.
Solution Approach 2:
The system incorporates wireless communication between attenuator vehicles to exchange status information and synchronize traffic control operations. This feedback mechanism ensures both vehicles are coordinated, preventing errors and ensuring reliable traffic control through continuous information exchange about traffic conditions and control state.
3Productivity
If automated attenuator vehicles with synchronization are used, then traffic management efficiency is improved, but device complexity increases
Solution Approach 1:
The attenuator vehicles are designed as multi-functional units that combine traffic control display, wireless communication, automated synchronization, and traffic monitoring capabilities in a single system. This universality allows the same hardware platform to perform multiple functions, reducing overall system complexity compared to having separate systems for each function.
Solution Approach 2:
The patent merges the traffic control functions of multiple vehicles into a synchronized system where the attenuator vehicles operate as a coordinated unit. By combining their control functions and synchronizing their operations through wireless communication, the system achieves efficient traffic management while managing complexity through integration rather than separate independent systems.
Data Source
AI summary
Synchronized work zone traffic management systems and methods are disclosed herein. An example method includes synchronizing, by a first vehicle, communication with a second vehicle over a wireless link, and displaying alternatingly, by the first vehicle, one of two messages on a first external display according to an alternating schema. A first message indicates to drivers to drive slowly and a second message indicates to the drivers to stop. The first message being displayed on the first external display when the second vehicle is displaying the second message on a second external display. The first vehicle displaying the second message on the first external display when the second vehicle is displaying the first message on the second external display. The alternating displaying of the first and second messages being used to control flow of traffic on a one-way street.