|
|
| Re: Queens Bus Redesign Results In Slower Speeds (350854) | |||
 |
|||
| Home > BusChat | |||
|
[ Read Responses | Post a New Response | Return to the Index ] |
|
||
|
Re: Queens Bus Redesign Results In Slower Speeds |
|
|
Posted by Stephen Bauman on Sat Mar 21 15:41:16 2026, in response to Queens Bus Redesign Results In Slower Speeds, posted by Stephen Bauman on Wed Mar 4 22:19:31 2026. Here are some real time results that is based on the data contained at this site:https://data.ny.gov/Transportation/MTA-Bus-Speeds-Beginning-2015/cudb-vcni/about_data month,before speed,after speed July 2024/2025, 8.68±1.71, 8.77±1.73 August 2024/2025, 8.66±1.70, 8.87±1.74 September 2024/2025, 8.41±1.74, 8.59±1.72 October 2024/2025, 8.48±1.74, 8.65±1.70 November 2024/2025, 8.54±1.77, 8.79±1.77 December 2024/2025, 8.59±1.77, 8.72±1.74 January 2025/2026, 8.74±1.75, 8.90±1.74 February 2025/2026, 8.65±1.73, 8.47±1.76 I've eliminated express buses because I'm interested in local service. The average speeds were calculated by dividing the monthly sums of the distance traveled by the time consumed. This is equivalent to calculating the time weighted mean of the individual route monthly speeds. The standard deviations were calculated as the time weighted standard deviation of the individual route monthly speeds. The numbers differ from a previous post. This is because a problem the MTA's data. They classified some of the QM63 data as local/limited rather than express. I'm also using the MTA's borough classification rather than filtering by Q and not QM as starting characters for the route. I don't know whether trusting the MTA for this filter will also bite me. The salient point is that any difference in the speed is swamped by the standard deviation. The speed differences are within 0.2 mph or only 0.12 sigma units. The best statistical case is that there is no change, despite increasing the distance between stops by 50%. |
|
|
|