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| Re: Queens Bus Redesign After 1 Year (350992) | |||
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Re: Queens Bus Redesign After 1 Year |
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Posted by Stephen Bauman on Fri Jun 26 11:38:38 2026, in response to Re: Queens Bus Redesign After 1 Year, posted by Allen45 on Fri Jun 26 06:57:39 2026. That shows the problem is...I'm looking for a more statistically rigorous method to prove causation than guilt by association. There are timeline problems that cast doubt on guilt by association. The first publication I read that suggesting increasing bus stop distance as a cure for slow NYC bus speeds was written in 2016. It was published by the NYC Transit Center. https://transitcenter.org/wp-content/uploads/2016/07/Turnaround_Fixing-NYCs-Buses-20July2016.pdf It used the Nation Transportation Database (NTD) as its data source. It divided Vehicle-Revenue-Miles by Vehicle-Revenue-Hours to determine average speed. https://www.transit.dot.gov/ntd/ntd-data The monthly data goes back to 2002. Annual data tables go back to 1997. The NTD's shortcoming is that it does not contain bus stop spacing. There's no way to correlate bus speed with stop spacing by using only the NTD data. That's one of the Transit Center's 2016 report's shortcomings. To my knowledge, the first study that did provide bus stop spacing by city was published in 2019. https://findingspress.org/article/27373-distributions-of-bus-stop-spacings-in-the-united-states It showed that NYC bus stop spacing was not particularly shorter than many large cities and that cities with shorter bus stop spacing enjoyed faster average bus speeds. This study made use of GTFS data, which permitted calculating the number of stops and distance of individual scheduled trips. The MTA started publishing GTFS data on 30 Oct 2013. It's not possible to make comparisons between bus stop spacing and bus speed before the GTFS data became available. The private bus companies were absorbed into the MTA in 2005-2006. There is no similar data for their operation, other than what's in the NTD. Unfortunately, the private company NTD entries make no distinction between express and local service. One would expect their average speed to be higher because they operated a greater percentage of express buses. The private companies are still reported as a separate entity in the NTD. However, the entry consolidates all the private companies. A before/after comparison for Triboro, Green, lines etc. is not possible. Very few Vision Zero/Livable Streets changes were made in Queens until the 2020's. Several were emergency Covid changes that were made permanent. Slow bus speeds were noticed in Queens, well before any Vision Zero changes. |
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