Guidelines for speed limits in Michigan work zones were revised in 2006.  Motorists are required to reduce their speed to 45 mph in any work zone where workers are present. If no workers are present, motorists should maintain the posted speed limit. More information on this change is available in the Safety Programs FAQ.

Another aspect of this program is nighttime construction. You may not see anyone working in these areas until the sun and traffic volumes go down. On other projects, contractors are not allowed to work during busy hours. All highway construction work is normally suspended during holidays. Other factors such as inspection activities, soil conditions, weather factors and production schedule may also give the appearance of minimal activity, but greatly impact the construction of the project.