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Measurement method for objective cyclist behavior parameters
Riske Meijer1, Esra van Dam1, Henri Bouma2
1Department of Integrated Vehicle Safety, TNO, Helmond, The Netherlands.
Traffic Injury Prevention
|April 15, 2020
Summary
This study developed a camera-based method to measure cyclist behavior, providing insights into infrastructure impact and road user interactions for improved cycling safety.
Area of Science:
- Urban Planning
- Transportation Engineering
- Traffic Safety
Background:
- Understanding cyclist behavior is crucial for urban infrastructure development.
- Existing methods may not fully capture cyclist interactions and infrastructure effects.
Purpose of the Study:
- To assess the feasibility of a novel measurement system for cyclist behavior.
- To identify behavioral indicators influenced by infrastructure and road user interactions.
Main Methods:
- An observational study utilizing six overhead cameras on a separated cycle path.
- Application of a Single Shot MultiBox Detector (SSD) for automated cyclist detection and tracking.
- Calculation and analysis of kinematic parameters including cyclist intensity, speed, position, and inter-cyclist distances.
Main Results:
- The developed method effectively quantifies cyclist intensity, path usage, velocity, and inter-cyclist spacing.
- Analysis revealed insights into waiting times and red-light negation.
- The system's accuracy was insufficient for analyzing sudden braking events or detecting collisions.
Conclusions:
- The measurement method offers valuable data for infrastructure improvements to enhance cyclist comfort and safety.
- Further development can enable qualitative comfort/safety analyses and multi-modal interaction studies.
