It would certainly reduce it - but not 100%. Perhaps 90%. But sadly there'll be some that are very motivated to just find other ways to get themselves in front of a subway train. There's certainly spots you could jump off a bridge in front of a train, or just hop a fence and climb down/up a bank.
@nfitz brother, I was referring to incidents involving the platform at the station. The context of the whole conversation should have alerted you to this. Again, you are pulling made up stats out of nowhere, because your gut feeling and vibes without a shred of research make you think ummm aCtUaLly iT's mOrE LiKe 90%. When I brought up fatal incident rate, instead of only suicide, it was in
good faith to address the fact full height PSDs very rarely hurt people while also preventing suicide.
Full height PSDs are not 100% fool proof, but they are far far more effective than 90% at reducing suicides and other deaths, like accidents and homicide on the subway system. The idea with PSDs isn't to prevent all suicides in general from happening, but to prevent them affecting subway operation.
From basically the only relevant review on this topic afaik:
"After screening 623 studies and their references, 51 studies were included; 26 empirically assessed rail-related prevention interventions and 25 provided relevant qualitative insights. [...]
Full-height PSDs eliminated all suicides" emphasis mine
This review aims to systematically evaluate existing literature on reducing suicides along railroads, with specific focus on effectiveness, limitations, and research gaps in the current evidence base. Database searches were conducted in PubMed, ...
pmc.ncbi.nlm.nih.gov
They're not 100% fool proof because people have wedged themselves between the two layers of doors and gotten hurt. Again, I did the napkin math for Shanghai's case, the last fatal platform screen door incident was in 2022, when the system was already ~800 km long. There were many minor ones prior to that across a decade. I was being very generous saying fatal incidents happen once every 2-3 years so as to not overestimate the difference in platform safety. The paper I cited derived its full height PSD conclusions from Shanghai, Japan, and Seoul. According to
@nfitz all 3 regimes might be cooking their data to mislead these poor researchers? Let's be real here. it's not easy at all to get hurt with full-height PSDs.
We're comparing apples to apples here, not apples to oranges+apples when you included jumping in front of the train after spidermanning down from the Prince Edward Viaduct. I exaggerate, but even including oranges, the
vast vast majority of incidents happen at the platform.
"There's certainly spots you could jump off a bridge in front of a train, or just hop a fence and climb down/up a bank."
Those examples you listed are practically infinitesimal. The average Canadian is not even fit enough to climb the tall fences surrounding above ground subway tracks.
You are ragebaiting again: "What it might do is shift more suicides to other locations, such GO trains, high bridges, and maybe even streetcars." This is completely off-topic and out of the purview of this conversation.
We're
not talking about how to solve mental health, we're talking about nitpicking this: "full-height Platform Edge Doors are what would, to a near certaintly prevent 90% of these incidents from ever happening, at a minimum. It should be close to 100%, but nothing is 100%."
@Northern Light