Shanghai, China
#00149
SuccessCity
Case study of
#00151 Install full-height platform screen doors to seal the track edge
Implementer
Shanghai Metro
Timeline
Jan 1, 2008 – Dec 31, 2017
Location
Shanghai, China31.2304, 121.4737
Description
Using monthly panel data from 94 stations over 2008–2017, suicides in the Shanghai metro declined by 90.9% after platform screen doors were installed. The study found no significant evidence of displacement to railway stations lacking PSDs, arguing against the means-substitution hypothesis in this context.
Metrics
1Metro suicides after PSD installationpre-PSD period-90.9%% change
Lessons learned
- Comprehensive PSD installation across 94 stations produced a 90.9% reduction in metro suicides with no detected displacement to non-PSD railway stations, supporting full-network coverage as a deployment strategy.
Sources
1Documented Jul 13, 2026