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Impact on Road Safety and Operation of Rerouting Traffic in Rural Travel Time Information System.
Mariusz Kiec1, Carmelo D'Agostino2, Sylwia Pazdan1
1Faculty of Civil Engineering, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland.
Sensors (Basel, Switzerland)
|July 30, 2020
Summary
This study analyzes road safety impacts of traffic rerouting using the Travel Time Information System (TTIS). It found that considering road safety alongside travel time optimizes traffic management in rural road systems.
Area of Science:
- Traffic Engineering
- Road Safety Analysis
- Intelligent Transportation Systems
Background:
- Travel Time Information Systems (TTIS) commonly prioritize travel time for traffic rerouting.
- Route recommendations often overlook critical road safety factors.
- A comprehensive analysis of road safety in conjunction with traffic operations is needed for effective intelligent traffic control.
Purpose of the Study:
- To analyze the road safety implications of rerouting traffic based on various network characteristics.
- To compare traffic operation performance (travel time, delay) with road safety outcomes.
- To develop a methodology for integrating road safety into TTIS for real-time rural road network management.
Main Methods:
- Analyzing safety levels across diverse road categories, intersection types, environments, and access point densities.
- Comparing travel time and delay metrics with predicted crash data for different routes.
- Developing a predictive model for crash frequency based on rerouting scenarios.
Main Results:
- Identified specific road characteristics that influence safety during rerouting.
- Demonstrated a trade-off between optimizing travel time and maximizing road safety.
- Provided a quantitative method for predicting crash numbers for alternative routes.
Conclusions:
- Rerouting decisions should incorporate road safety criteria beyond just travel time.
- The developed methodology offers a tool for balancing traffic operation and safety in TTIS.
- This approach is transferable to other TTIS for enhanced real-time road network management.
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