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Critique of DOT's daylighting study methodology and sample size
3:00:05
ยท
92 sec
Council Member Julie Won criticizes the methodology and sample size of DOT's daylighting study, arguing that the data used for universal daylighting is insufficient.
- The study examined 7,558 intersections with hydrant zones (90% fire hydrants, 10% bus stops)
- A smaller sample of 956 intersections was studied for before-and-after injury results
- Council Member Won argues that the smaller sample size for before-and-after analysis is not adequate for a universal daylighting study
Julie Won
3:00:05
I just wanna follow-up.
3:00:07
For the report that I was referring to for DOT daylighting study, what I was referring to about before and after analysis, 7,558 intersections with hydrant zones, so 90% fire hydrants, 10% bus stops were studied and compared to other locations citywide, so only within our own city that doesn't actually have universal daylighting.
3:00:27
This analysis provided a very large sample size, but no before and after analysis was possible.
3:00:33
And then in addition to that, which are fire hydrants mostly and bus stops, nine fifty six intersections, so significantly less, were studied before and after injury results from daylighting existed.
3:00:47
These locations, both hardened and signed only, were installed between 2019 and 2021 and compared to other nearby intersections to control broader trends, and this analysis provided the much clearer comparison but had a significantly smaller sample size.
3:01:02
So I want to make sure it's on record that the data that you're using for your universal daylighting study is not enough.
3:01:09
In addition to that, I want to ask a question about I also want to put on record for our follow-up on the Queen's South Outer Roadway Bridge opening for pedestrians, we want to have a clear implementation timeline for everything that you talked about for the fencing, the pavement, the concrete landing, the concrete median, the new signal across Crescent Street, the building of a concrete sidewalk connecting 20 Seventh Street.
3:01:35
So we're gonna want to know that from the Queen Side.