Coolidge Road Complete Streets Project

December 2021 Update
Berkley has received the latest results from TIA. TIA and the Coolidge Oversight Task Force Committee met on December 13, 2021, to look over the latest data collection on the Coolidge Highway Road Diet project. 

Next Steps for the Committee include:

  • Schedule meeting dates within the first quarter of 2022
  • Formalize and draft a recommendation 

As stated in previous updates, the City does not want to rush to make decisions based upon depressed volumes. The primary goals of this portion of the pilot project focus on safety and functionality. 

Documents reviewed at the December 13, 2021 Meeting:

What is the Coolidge Road Diet?
The Coolidge Highway Complete Streets Initiative involves a 24-month evaluation period to determine if re-striping Coolidge between 11 Mile and 12 Mile from four lanes to three will improve traffic flow and make the road safer and friendlier for pedestrians and bicyclists. Part of the study incorporates a 12-month review of the eight safety metrics that are part of the Coolidge Road Right-Sizing and Safety Corridor Metrics Matrix. The Berkley Downtown Development Authority is financing the project and can provide more details about the project can be found here.

Current Challenges to Drivers and Pedestrians with Coolidge 
The current configuration of Coolidge between 11 Mile and 12 Mile was designed to allow vehicles to travel from one destination to another. Despite being built for the purpose it does not excel at it. Some of the potential problems with the Coolidge design include:

  • Drivers in the interior lanes experience stop-and-go traffic movement while waiting for cars ahead of them to complete a left turn.
  • Drivers attempting to reach a destination along the corridor find it difficult to make a left turn across two lanes of traffic.
  • There were 80 accidents recorded between 2014 and 2016. Assuming just two vehicles per accident, that is 160 drivers in a short span. In 2017, there were an additional 37 crashes along Coolidge, 13 crashes South of Catalpa, and 24 crashes North of Catalpa.
  • The design of the road creates blind spots for drivers and pedestrians, making new crosswalks difficult to install and causing pedestrians to walk a quarter-mile before crossing at an intersection. With limited crossings, pedestrians often attempt to cross all four lanes of traffic illegally and dangerously.
To review the full Narrative & Measurements for the Coolidge Road 12-Month Safety Review CLICK HERE BUTTON

Wondering how the Coolidge Road Diet is being measured? 
Click here to download the comprehensive metrics matrix that will be used to measure the project's success (updated 4/15/2021 to account for pandemic delays).

Click here
 to read how removing lanes from a busy street can actually make traffic better.

The Data Is In!

 To view the six-month presentation on the Road Diet CLICK HERE BUTTON

Check out the latest six-month raw data report on the Complete Streets Initiative

We Want to Hear from You! 
Got feedback on the Coolidge Road Diet? Send us your comments about the plan to

You can also download the Communications Strategy showing tactics that have been implemented.

Click here to read the comments that have been received as of August 12, 2019.

Multi-Community Bike Trail System
An important element of the Coolidge Highway Road Diet is the bike lanes which will run in both directions from 11 Mile to 12 Mile. These lanes are intended to become a part of a proposed multi-community bike system that includes Huntington Woods and Oak Park. Below you will find a map showing how the three communities plan to develop an integrated bike system, along with informative material on bike/driver safety. 

Bike System

Understanding Bike Lanes

Click here
 for "What Every Driver Should Know About Bike Lanes."

Click here to read "What Every Michigan Bicyclist Must Know."

Click here to read "What Every Young Michigan Bicyclist Must Know."

Need a quick refresher on the proper hand signals while you're biking in traffic?
Check out the Southeast Michigan Council of Governments graphic below. You can also learn more at 




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