Safety performance of dedicated and preferential bus lanes using multivariate negative binomial models for Bogotá, Colombia
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View abstract on PubMed
Summary
This summary is machine-generated.Bus Rapid Transit (BRT) and Buses with High Level of Service (BHLS) systems show varying safety outcomes. BHLS networks present the highest crash risk, while BRT systems experience more severe collisions despite lower overall rates.
Area Of Science
- Transportation Engineering
- Urban Planning
- Road Safety Analysis
Background
- Public transport priority systems like Bus Rapid Transit (BRT) and Buses with High Level of Service (BHLS) are crucial for urban mobility in developing cities.
- While their mobility benefits are recognized, evidence on how specific corridor characteristics influence safety remains limited.
Purpose Of The Study
- To analyze and compare crash risk across arterial roads, BRT, and BHLS corridors in Bogotá, Colombia.
- To identify key infrastructure and operational factors influencing safety performance in different public transport systems.
Main Methods
- A multivariate negative binomial model was developed to compare crash risk.
- Analysis included 712.1 km of arterial roads, 194.1 km of BRT, and 135.6 km of BHLS networks from 2015-2018.
- Thirty operational and infrastructure variables were considered, with model selection based on AIC, K-fold cross-validation, and parsimony.
Main Results
- The Buses with High Level of Service (BHLS) network exhibited the highest risk for fatalities, injuries, and property damage.
- Bus Rapid Transit (BRT) corridors showed lower rates of less severe collisions but an increase in fatalities and injuries.
- BHLS infrastructure demonstrated the lowest safety performance compared to both BRT and standard arterial roads, despite mobility advantages.
Conclusions
- BHLS networks, while enhancing mobility, present significant safety challenges in dense urban environments.
- Factors such as signalized intersection density and road curvature are critical for designing safer bus corridors.
- Findings offer insights for urban planners and authorities in developing countries to improve public transport safety.
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