Vehicle Control System for Crew Working Hours Tracking
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Solution Overview
Problem
Current systems for monitoring and enforcing crew working hours in vehicle operations are prone to inaccuracies and manual errors, leading to increased risks of fatigue-related accidents and delays due to self-reporting by operators, which can result in vehicles being left idle as replacement crews search for them.
Innovation Solution
A vehicle control system that tracks crew working hours automatically, provides notifications when limits are approaching, and can control the vehicle to stop or slow down to prevent movement when limits are exceeded, ensuring safety and reducing delays by suggesting safe stopping locations and managing crew swaps efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual self-monitoring of working hours is used, then the system complexity is reduced, but the measurement precision and reliability of working hours tracking deteriorates
Solution Approach 1:
The vehicle control system automatically tracks and monitors crew working hours without requiring manual self-reporting. The system self-services by collecting working hours data, comparing it against regulatory limits, and autonomously determining when crew members have exceeded their allowed working hours, thereby eliminating manual monitoring while ensuring accurate tracking.
Solution Approach 2:
The system continuously monitors working hours and provides feedback to both the crew member and the control system. When the working hours approach or exceed regulatory limits, the system generates notifications and alerts, enabling timely intervention and ensuring compliance with working hour regulations.
2Reliability
If automated control to stop movement is implemented when service limit is exceeded, then the reliability and safety are improved, but the productivity and travel time are worsened
Solution Approach 1:
The system proactively identifies when crew members are approaching their working hour limits and takes preliminary actions by notifying the crew and the offboard location before the limit is exceeded. This allows for planned crew replacements at convenient locations rather than emergency stops, thereby maintaining safety while minimizing disruption to travel schedules.
Solution Approach 2:
The system acts as an intermediary between the crew, the vehicle control system, and the offboard location. It coordinates crew replacements by communicating with the offboard location to arrange for replacement crew members, thereby facilitating smooth transitions that maintain safety compliance while minimizing impact on productivity and travel time.
3Device complexity
If manual self-reporting of working hours is used, then the device complexity is reduced, but the loss of information and coordination efficiency worsen
Solution Approach 1:
The system replaces manual self-reporting mechanisms with automated electronic monitoring and communication systems. The vehicle control system automatically collects working hours data, transmits it to the offboard location, and receives coordination information, thereby eliminating manual reporting errors and information loss while maintaining manageable system complexity through integrated automation.
Data Source
AI summary
A system includes one or more processors configured to track working hours of one or more members of a crew that operates a vehicle system. The working hours accumulate as the vehicle system travels on a route. The one or more processors are configured to direct a display device to present a notification message that indicates an amount of time remaining until the working hours reach a prescribed service limit for a designated time interval. The one or more processors are configured to automatically control the vehicle system to one or more of stop movement of the vehicle system, slow movement of the vehicle system, or prevent movement of the vehicle system from a stationary position responsive to determining that the working hours of the one or more members of the crew exceed the prescribed service limit.