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Bus Transit Priority

Bus-only lane on Washington Street in Roslindale, with traffic in adjacent lanes and an MBTA bus with a clear path in its own lane.

As regional congestion continues to worsen, how cities and towns manage the streets and signals used by MBTA buses has a lot to do with how fast or slow our buses run.

The MBTA has identified 14 corridor miles for focused investment in bus priority infrastructure that will have the highest and most immediate benefits for riders.

In conjunction with the Better Bus Project, the T is partnering with communities to make investments in bus priority tools in these and other potential corridors.

See the impact these pilots have made so far

Building a Better T

As part of our $8 billion, 5-year capital investment plan, we're renovating stations, modernizing fare collection systems, upgrading services for our buses, subways, and ferries, and improving the accessibility of the entire system.

Learn more

Bus transit priority features include:

  • Creating bus lanes or shared bus/bike lanes during rush hours, giving buses a clear path past traffic 
  • Working on transit signal priority, which gives preference to buses at traffic lights
  • Implementing queue jumps, short stretches of priority lanes that let buses bypass waiting traffic with early green signals

Rider benefits include more efficient bus service, with:

  • Fewer delays
  • Faster bus trips
  • More reliable and frequent service

Allston

The 57 bus travels in a dedicated bus and bike lane on Brighton Ave in Allston. (July 2019)

Brighton Ave Bus Lane

  • What: Shared bus-bike lane
  • When: June 2019 onward
  • Where: Brighton Ave, between Cambridge St and Commonwealth Ave, and between Packard's Corner and Union Square, in Allston
  • Routes: 57/57A and 66

Arlington

A closeup of a bus approaching in the new bus lane on Mass Ave in Arlington

Massachusetts Ave Bus Lane

  • What: Shared bus-bike, transit signal priority
  • When: Monday – Friday, 6 AM – 9 AM
  • Where: Massachusetts Ave, eastbound, from Lake St to Alewife Brook Parkway
  • Routes: 77, 79, and 350

Downtown Boston

The new dedicated bus lane on Summer Street outside of South Station

Summer St Bus Lane

  • What: Shared bus/bike lane
  • When: October 2019 onward
  • Where: Summer St inbound from Dorchester Ave to Atlantic Ave (Financial District)
  • Routes: 4 and 7

Additional Projects

The city of Boston is doing ongoing work to mitigate congestion and improve bus service in high-traffic neighborhoods.

Cambridge

Bus lane on Massachusetts Ave in Cambridge, near Central Square (November 2018)

Massachusetts Ave Bus Lane

  • What: Dedicated bus lane
  • When: November 2018 onward
  • Where: South Massachusetts Ave, from Sidney Street to Memorial Drive
  • Routes: 1 and 70

Additional Projects

In 2018 and 2019, Cambridge participated in PARK(ing) Day, an annual event that transforms metered parking spots into temporary public spaces.

Cambridge and Watertown

Bus lane on Mt Auburn St in Cambridge and Watertown (November 2018)

Mt Auburn St Bus Lane

  • What: Shared bus/bike lane, transit signal priority
  • When: Mid-October 2018 onward
  • Where: Mt Auburn St and Belmont St
  • Routes: 71 and 73

Everett

Bus lane on Broadway in Everett

Broadway Bus Lane

What: Dedicated bus lane, transit signal priority, level boarding
When: Monday – Friday, 4 AM – 9 AM
Where: Broadway
Routes: 97, 104, 109, 110, and 112

Roslindale

Bus-only lane on Washington Street in Roslindale, with traffic in adjacent lanes and an MBTA bus with a clear path in its own lane.

Washington St Bus Lane

  • What: Shared bus/bike lane
  • When: Monday – Friday, 5 AM – 9 AM
  • Where: Washington Street, inbound from Roslindale Village to Forest Hills Station
  • Routes: 30, 34, 34E, 35, 36, 37, 40, 50, and 51

Somerville

An overhead shot of Broadway in Somerville, where a bus lane has been implemented
Photo courtesy of Radu Nan of Kittelson & Associates

Broadway Bus Lane

  • What: Bus and bike lanes, transit signal priority, new pavement markings and signage
  • When: August 2019 onward
  • Where: Broadway between Magoun Square and McGrath Highway
  • Routes: 89 and 101

Contact Information

For all queries and comments related to Bus Priority Lanes, please contact the Better Bus Project at betterbusproject@mbta.com

Related Projects

Better Bus Project: Making transit better together

Too many of our bus routes still fail to live up to our own standards. Through the Better Bus Project, we are changing that.

Learn about the Better Bus Project

Building a Better T

As part of our $8 billion, 5-year capital investment plan, we're renovating stations, modernizing fare collection systems, upgrading services for our buses, subways, and ferries, and improving the accessibility of the entire system.

Learn more

Related Projects

Better Bus Project: Making transit better together

Too many of our bus routes still fail to live up to our own standards. Through the Better Bus Project, we are changing that.

Learn about the Better Bus Project