The bill amends Section 627 of the Michigan Vehicle Code, which governs speed limits on highways. It emphasizes that individuals operating vehicles must do so at a careful and prudent speed, not exceeding what allows for a stop within a clear distance ahead. The bill introduces a new designation for violations of this requirement as "violation of the basic speed law" (VBSL). It also outlines specific speed limits for various highway segments, including 15 miles per hour in mobile home parks, 25 miles per hour in business districts and public parks, and varying limits based on the density of vehicular access points.

Additionally, the bill modifies the speed limit for county highways with gravel or unimproved surfaces from 45 miles per hour to 25 miles per hour upon request from municipalities in counties with populations over 1,000,000. It establishes procedures for municipalities to request speed limit changes, including conducting speed studies to determine appropriate limits based on traffic conditions. The bill also mandates that speed limits must be properly posted to be enforceable and outlines the responsibilities of local authorities and the state transportation department in managing speed limit signage and enforcement.

Statutes affected:
House Introduced Bill: 257.627