Detroit, MI Sign Regulations: Freeway-Facing Signs (2026)
Key Facts
- Prohibited location
- Freeway overpasses within Detroit
- Enforcing agency
- Detroit Police Department
- Maximum penalty
- $500 fine, 90 days jail
- Violation counting
- Each day is a separate offense
- Governing law
- Detroit City Code § 4-1-5
Summary
Detroit bans placing or carrying any advertising sign, material, or commercial message on a freeway overpass where it would face oncoming freeway traffic, enforced as a misdemeanor by the Police Department.
It shall be unlawful for any person to carry or place on any freeway overpass any advertising sign, advertising material, or other commercial message that would be oriented toward and visible to the occupants of vehicles on such freeway.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 4).
Full Breakdown
Detroit City Code § 4-1-5 makes it unlawful to carry or place any advertising sign, advertising material, or other commercial message on a freeway overpass if it is oriented toward and visible to occupants of vehicles on the freeway below. The rule covers I-75, I-94, I-96, and every other freeway overpass within the city. The Police Department enforces the article, and each day a violation continues can be charged as a separate misdemeanor, punishable by up to a $500 fine and 90 days in jail per violation under § 4-1-2.
Violations & Fines
Violating § 4-1-5 is a misdemeanor enforced by Detroit Police; each day the sign remains up counts as a separate offense, with fines up to $500 and up to 90 days in jail.
Frequently Asked Questions
Can I put an advertising sign on a freeway overpass in Detroit?
What happens if I violate the freeway overpass sign ban?
Sources & Official References
Other rules in Detroit
Compare Detroit to another location·View the Michigan sign regulations overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.