Mode-shift impacts on safety
Document Type
Report
Publication Date
2024
Subject Area
literature review - literature review, mode - bike, mode - bus, mode - car, mode - pedestrian, mode - rail, place - australasia, planning - methods, planning - safety/accidents, planning - service level, planning - surveys, ridership - elasticity, ridership - mode choice
Keywords
Elasticity, household travel, mode shift, safety, safety impact, travel modes
Abstract
Many jurisdictions have targets to reduce vehicle travel and crashes. This study examines how these efforts can be integrated. Reducing motor-vehicle-kilometres travelled can reduce crash risk in addition to emissions. However, our current understanding of these impacts is limited, due to the complex interactions between the various risk factors plus inadequate data. This study examined research concerning the effects of mode shifts on casualty crash rates. It found that most risk factors have been studied individually, with many areas nearing academic consensus on relationships. Most studies only considered a few modes and did not explore multiple interactive relationships, and so tend to underestimate the full safety benefits of community-wide shifts from driving to walking, bicycling and public transport. This research has collated recent police crash report and hospital data, and produced a spreadsheet model that enables testing of various mode-shift scenarios. However, more research is needed to evaluate how mode changes are likely to affect crash casualties when other infrastructure and policy factors are taken into account.
Rights
Permission to publish the abstract has been given by NZ Transport Agency Waka Kotahi (NZTA), copyright remains with them.
Recommended Citation
Koorey, G., Lieswyn, J., Gregory, M., van den Top, P., Reid, N., Azzizi, A., & Ware, L. (2024). Mode-shift impact on safety (NZ Transport Agency Waka Kotahi research report 728).
