These increases commenced on May 1, 2017 and were completed by May 15, 2017. Speed limits in freeway work zones are statutorily limited to 24 hours per day. If workers are present (and not behind a barrier wall), drivers must slow to for the workers' safety. Michigan's speed limits on urban Interstates are typically higher than its adjacent states. For example, in the Detroit metro area, I-75 southbound enters Detroit at M-102 (8 Mile Road, exit 59) and maintains a limit all the way until the interchange with I-94 (exit 53), where the speed limit drops to . Other freeways in Detroit such as I-94 and I-96 also have speed limits in and around the city's downtown area, but rise to relatively soon after leaving the downtown area. In Downtown Grand Rapids, I-196 has a speed limit of , the only other urban Interstate Highway to have a reduced speed limit. US 131 in Grand Rapids is one of the only non-Interstate urban freeways in Michigan with a speed limit, which was raised from since 2013. Furthermore, speed limits in smaller cities, such as Kalamazoo, Ann Arbor, and Lansing (the state capital) remain at . The default speed on all other highways, whether two or four lanes, is . However, Michigan permits speed limits of up to after a safety study concludes the higher limit is safe to implement. Until 2016, this provision only applied to four-lane divided non-limited access highways. A stretch of US 127 between St. Johns and Ithaca was posted at , as a compromise to allow a freer flow of traffic due to insufficient funds to improve the section to freeway standards. The speed limit on US 2 between Rapid River and Gladstone in the Upper Peninsula was also raised to . In Summer 2017 Speed limits began increasing to 65 mph on several select two-lane roads in both the Lower and Upper Peninsulas of Michigan, including US 2 from St. Ignace to Rapid River and M-28 from I-75 to Munising. The speed limit in Midway Atoll is . Urban speeds are set, by default, to 30 mph. A 70 mph speed limit is only allowed on Minnesota's Interstates outside of urban areas. A speed limit of 55 mph is typically used in urban areas where a higher speed limit might be used, but traffic congestion or other reasons require a lower speed limit. Examples include I-94, I-35W and I-35E in and around Minneapolis, Moorhead and Saint Paul. 35E goes down to a speed limit of 45 mph in some areas of Saint Paul.