Bus accident analysis of routes with/without bus priority

Area of Science:

• Transportation Engineering
• Traffic Safety Research

Background:

• Road safety and bus-involved accidents are critical concerns in urban environments.
• Bus priority measures are implemented to improve public transport efficiency and potentially safety.

Purpose of the Study:

• To evaluate the road safety performance and impact of bus priority measures on bus-involved accidents in Melbourne.
• To analyze accident types and quantify safety benefits associated with bus priority.

Main Methods:

• Empirical analysis of accident data on roads with bus priority measures.
• Application of mixed-effects negative binomial (MENB) regression and back-propagation neural network (BPNN) modelling.
• Sensitivity analyses to compare model predictions and validate findings.

Main Results:

• Significant reduction in accidents involving buses hitting stationary objects and vehicles.
• Demonstrated significant safety benefits of bus priority through statistical modelling.
• MENB model showed slightly better performance in predicting accident counts.

Conclusions:

• Bus priority measures in Melbourne effectively improve road safety by addressing bus manoeuvrability issues.
• Bus priority should be a key consideration for road management agencies when planning urban road schemes.
• Mixed-effects modelling approaches are beneficial for accident prediction due to their ability to handle complex factors.