Viewing a single comment thread. View all comments

Smilerk t1_j9umg7b wrote

Reply to comment by michael_scarn_21 in T unveils new slow zone dashboard providing never-before-seen look at subway condition by austinmartinyes

Volunteer for TM here who made the SZ tracker :)

Our algorithm only flags a slow zone when its travel time is 10% higher than the median for 4 days in a row. Some of these slow zone orders are only for a few hundred feet of track which only accounts for a few second delay in overall travel time between two train stops.

TLDR -> MBTA is showing more granular slow zones, which is important. But not all have a big impact on travel time, i.e. disruptions that riders actually feel.

80