Traffic control: speed restrictions; modification requirements for speed restrictions in school zones; revise.

Michigan House Bill 6273 amends the state vehicle code to update rules regarding speed limits in school zones. The bill allows county road commissions to permanently lower a school zone speed limit to 25 miles per hour upon request from a school district, without requiring a new traffic study. It also clarifies that temporary reduced speed limits can be set up to 30 minutes before and after school sessions, with flexibility for superintendents to adjust these times based on specific schedules or off-campus lunch periods.