I have noticed the Green Line trunk Between Haymarket and Hynes Convention Ctr & Brigham Circle has failed to deliver promised results, with actual data only showing a small fraction of the promised travel time savings.
(The reason I select origin destinations heading to Haymarket is primarily since I need the data to evaluate the amount of travel time to reach the Haymarket Congress St. busway for the bus connection, hence Haymarket is selected as the destination).
To figure out what's going on I had to download each month of data from TransitMatters as the data dashboard regularly refuses to load more than 3 - 9 weeks of data for the Green Line trunk at one time, so I downloaded all data to 2016 to find the slow and fast points for the Green Line trunk.
I then took the data from TransitMatters and converted it into 7 day rolling averages, in order to smoothen out the data and get better trends by reducing the effect of outlier data and weekend travel differences compared to weekdays.
For the stretch from Kenmore to Haymarket eastbound, I have got this data. The Green Line trunk is slower than the pre-March 2023 travel times, although it is not as slow as it was around April-May 2023. It is still over 1.5 - 2 minutes slower than Spring 2018, which had the fastest travel times between Kenmore and Haymarket eastbound outside of COVID. Travel times have only decreased by around 2 minutes compared to the peak in October 2023.
Note: There are a few slow zones from Kenmore to just east of Hynes Convention Center.
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For the stretch from Longwood Medical Area to Haymarket eastbound, travel times are slightly slower then they were in Fall 2022 or Winter 2023. It is also around 1.5 minutes slower than it was in Spring 2018, the fastest travel times outside of COVID. There are zero slow zones Eastbound (EB) from Longwood Medical Area to Haymarket. Travel times have decreased by around 1.5 minutes compared to the peak in October 2023, although peaks in October 2019 and June 2016 are higher (slower) than the slowest travel times in October 2023.
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