Person biking on Garden Street

Garden Street Safety Improvement Project

Project Description + Goals

Through this quick-build project, we will install separated bike lanes along Garden Street from Huron Avenue to Mason Street near Cambridge Common. Separated bike lanes create space that is physically separated from vehicle traffic, which improves safety and comfort for people biking. Our toolbox includes pavement markings, traffic signal modifications, signs, and flex posts.


Current Status

On Tuesday, May 24, 2022, we held our first community meeting via Zoom to introduce the project. If you missed the presentation or would like to see or hear it again, we've included links to both the presentation and the recording in the section below.

Please fill out our survey about Garden Street if you have not done so already. We are still looking for feedback as we work through the design process and develop alternatives for the next meeting. The survey will be available until Friday, June 24. Our second community meeting on the project will be held on Tuesday, July 12, 2022. Click here for additional meeting information and instructions on how to join.

Previous Updates + Background


May 24, 2022 - Community Meeting 1

On Tuesday, May 24, 2022, we held our first community meeting via Zoom to introduce the project. You can view a PDF of the presentation; or watch, listen to, or read a recording of the meeting. The video recording is captioned in English.

Separated Bike Lane Example

Mt Auburn St at Holyoke St - Before and After

The images below show Mt Auburn St at Holyoke St before and after separated bike lanes were installed as a part of the Inner Mount Auburn Safety Improvement Project.

The left image shows Inner Mt Auburn St with a standard bike lane, travel lane, and a parking lane. The right image shows Inner Mt Auburn St with a bike lane, buffer area with flex posts, a travel lane, a parking lane, and daylighting.

Key Components of Separated Bike Lanes

  • Bike lanes create dedicated space for people who are biking.
  • Buffers (painted lines on the street) create space between people biking and people driving. They help prevent unintentional collisions that could cause serious harm to the people involved. Depending on the location, there may be a parking lane next to the buffer area. In these instances, drivers can use the buffer area to safely get in and out of the car and to load and unload items.
  • Flex posts are placed in the buffer area and serve as a vertical barrier in the buffer area.
  • Travel lanes allow space for people to drive down the street, but can be used by anyone.
  • Green markings help alert people turning from the travel lane that they should look out for people on bikes. These are generally installed at intersections and across driveways.
  • Parking creates space for people to store their vehicles while they are in the area. This part of the street may also be designated as loading zones, which help make it easier for delivery people to do their jobs.
  • Daylighting is when the parking lane is pulled back 20 feet to make it easier for people driving down the street and people waiting to cross the street to see each other. These areas are generally marked with lines on the ground. There may also be flex posts.

Why Install Separated Bike Lanes

Separated bike lanes provide more space and vertical separation between people on bikes and people in cars. More people are comfortable biking in separated bike lanes than in traditional bike lanes or in traffic with cars, buses, and trucks. Separated bike lanes also increase safety for people walking by reducing crossing distances. As we install separated bike lanes, we also look for opportunities to increase visibility at intersections, refresh crosswalk markings, and install appropriate pedestrian crossing signs.

Page was posted on 2/17/2021 5:17 PM
Page was last modified on 6/13/2022 9:32 AM
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