Skip to content

T’s Real-Time Crowding Info Expands to 23 Routes, Including the 111 to Chelsea

The MBTA's real-time broadcasts of bus crowding data have been expanded to 23 bus routes, including the 111 to Chelsea.
Transit app screenshot showing crowding data
A screenshot from the Transit app shows real-time crowding information for a 111 bus in Chelsea.

The MBTA’s real-time broadcasts of bus crowding data have been expanded to 23 bus routes, including the 111 to Chelsea.

Crowding information is now available for buses running on routes 1, 8, 10, 15, 16, 17, 21, 22, 23, 31, 32, 44, 66, 70, 71, 73, 77, 86, 104, 108, 109, 110 and 111.

A screenshot of the Transit app showing crowding data for buses on Route 111 in Chelsea.
A screenshot of the Transit app showing crowding data for buses on Route 111 in Chelse

The crowding data come from automated passenger counters (APCs), sensors installed at the front and rear doors that detect when someone boards or exits from the bus. Crowding levels are described as “Crowded,” “Some Crowding,” and “Not Crowded,” with standards based on lower crowding thresholds that allow for greater physical distancing on buses.

The information is included on the MTBA website and on the Transit app alongside real-time bus arrival and departure information, making it possible for riders to see, if one bus is too crowded, how long they may need to wait for less crowded buses to arrive.

The MBTA started broadcasting crowding information on nine initial routes last month. The 111, a route that essential workers rely on to cross the Mystic River into Boston, was initially omitted, has attracted widespread media attention this spring. Additional routes are being added as members of the MBTA’s Customer Technology Team verifies the accuracy of APC data in the field.

Photo of Christian MilNeil
Christian has edited StreetsblogMASS since its founding in spring 2019. Before that, he was a data reporter for the Portland Press Herald in Maine. Got tips? Send them to me via Signal, the encrypted messaging app, at 207-310-0728.

Read More:

More from Streetsblog Massachusetts

Gov. Healey Cuts the Ribbon On Fall River’s Waterfront Highway-to-Boulevard Conversion

October 30, 2026

Friday’s Headlines (Except Spooky)

October 30, 2026

Eyes On the Street: DCR Tames Traffic Next to Boston’s Arnold Arboretum

October 28, 2026

Study: The Missing Ingredient in the Fight To End Car Crash Deaths is… Fewer Cars

October 27, 2026

Why Deadly, Illegal E-Motos Are On The Rise – And Why E-Bikes Are Being Blamed When They Crash

October 26, 2026
See all posts