MI HB4132

Authorizes the state transportation department to install and use automated speed enforcement systems in work zones on state highways without concrete barriers, effective one year after the bill becomes law.

Defines automated speed enforcement systems as electronic sensors using lidar or equivalent technology (not radar) that capture vehicle registration plates, location, date, and time of speeding violations exceeding posted limits by 10 mph or more.

Establishes escalating penalties: first violations receive written warnings; second violations within 3 years result in civil fines up to $150; third or subsequent violations within 3 years result in civil fines up to $300.

Requires advance notice with warning signs placed one mile before work zones and digital speed displays on the enforcement systems; limits deployment to no more than 4 systems per state transportation department region.

Creates the work zone safety fund to cover costs of contracted vendors, system administration, and citation mailing, with any fiscal year surplus directed to public and county law libraries.