Opinions count at SEMCOG

SEMCOG encourages informed and productive participation in issues affecting the public. View SEMCOG's Public Participation Plan (revised 2011) and video – Citizen's Guide to Transportation Planning in Southeast Michigan.

Check back here for future announcements.

2040 Regional Transportation Plan & 2014-2017 Transportation Improvement Program

In 2013, local government members of SEMCOG adopted a long-range transportation plan and a list of the highest-priority projects to be funded over the next five years for Southeast Michigan. The plan and projects demonstrated how the transportation system improves the region by supporting continued economic recovery, environmental health, community revitalization, and quality of life.

Regional Transit Authority (RTA)

A Regional Transit Authority (RTA) has been established for Southeast Michigan. The RTA is composed of the counties of Macomb, Oakland, Washtenaw, and Wayne.

View Public Notices

SEMCOG invites public comment on an amendment to the 2040 Regional Transportation Plan and 2014-2017 Transportation Improvement Program

Announcements from our partner organizations

Check back here for future announcements.

You are also welcome to comment at any time on issues that involve SEMCOG. There are four ways to comment:

By mail

1001 Woodward Avenue, Suite 1400, Detroit, MI 48226-1904,
Attention: Public Comment

By phone

(313) 961-4266 or (800) 961-3334

By e-mail


By fax

(313) 961-4869

Developing Regional Solutions
SEMCOG is a regional planning partnership of governmental units serving 4.7 million people in the seven-county region of Southeast Michigan striving to enhance the region's quality of life.