Hong Kong
#00150
SuccessCity
Case study of
#00151 Install full-height platform screen doors to seal the track edge
Implementer
MTR Corporation
Location
Hong Kong22.3193, 114.1694
Description
Platform screen doors installed across the Hong Kong MTR were associated with a 59.9% reduction in railway suicides, with no evidence of substitution to unsealed platforms. The lower reduction compared to other cities partly reflects that some MTR platforms used half-height doors and that baseline conditions differed.
Metrics
1Railway suicides after PSD installationpre-PSD period-59.9%% change
Lessons learned
- Reductions occurred without displacement to unsealed platforms, supporting means restriction over substitution for this method.
- Effect size varies with barrier height and baseline conditions — full-height doors and system-wide coverage are likely needed to maximise impact.
Documented Jul 13, 2026