2023 Michigan Compiled Laws › Chapter 257 - Motor Vehicles › Act 300 of 1949 - Michigan Vehicle Code (257.1 - 257.923) › 300-1949-VI - Chapter VI Obedience to and Effect of Traffic Laws (257.601...257.750) › 300-1949-VI-DRIVING-ON-RIGHT-SIDE-OF-ROADWAY—OVERTAKING-AND-PASS - Driving on Right Side of Roadway—overtaking and Passing, Etc. (257.634...257.646) › Section 257.634 - Driving on Right Half of Roadway; Exceptions; Driving on Roadway Having 2 or More Lanes for Travel in 1 Direction; Traveling on Freeway Having 3 or More Lanes for Travel in Same Direction; Ordinance Regulating Same Subject Matter Prohibited; Violation as Civil Infraction.

257.634 Driving on right half of roadway; exceptions; driving on roadway having 2 or more lanes for travel in 1 direction; traveling on freeway having 3 or more lanes for travel in same direction; ordinance regulating same subject matter prohibited; violation as civil infraction.
Sec. 634.
(1) Upon each roadway of sufficient width, the driver of a vehicle shall drive the vehicle upon the right half of the roadway, except as follows:
(a) When overtaking and passing another vehicle proceeding in the same direction under the rules governing that movement.
(b) When the right half of a roadway is closed to traffic while under construction or repair or when an obstruction exists making it necessary to drive to the left of the center of the highway. A driver who is driving on the left half of a roadway under this subdivision shall yield the right-of-way to an oncoming vehicle traveling in the proper direction upon the unobstructed portion of the roadway.
(c) When a vehicle operated by a state agency or a local authority or an agent of a state agency or local authority is engaged in work on the roadway.
(d) Upon a roadway divided into 3 marked lanes for traffic under the rules applicable on the roadway.
(2) Upon a roadway having 2 or more lanes for travel in 1 direction, the driver of a vehicle shall drive the vehicle in the extreme right-hand lane available for travel except as otherwise provided in this section. However, the driver of a vehicle may drive the vehicle in any lane lawfully available to traffic moving in the same direction of travel when the lanes are occupied by a streetcar or vehicles moving in substantially continuous lanes of traffic and in any left-hand lane lawfully available to traffic moving in the same direction of travel for a reasonable distance before making a left turn or to avoid blocking, delaying, or otherwise interfering with the movement of a streetcar on a streetcar track.
(3) This section must not be construed to prohibit a vehicle traveling in the appropriate direction from traveling in any lane of a freeway having 3 or more lanes for travel in the same direction. However, a city, village, township, or county may not enact an ordinance that regulates the same subject matter as any provision of this subsection. The driver of a truck with a gross weight of more than 10,000 pounds, a truck tractor, or a combination of a vehicle and trailer or semitrailer shall drive the vehicle or combination of vehicles only in either of the 2 lanes farthest to the right, except for a reasonable distance when making a left turn or where a special hazard exists that requires the use of an alternative lane for safety reasons.
(4) A person who violates this section is responsible for a civil infraction.
History:
1949, Act 300, Eff. Sept. 23, 1949 ;-- Am. 1968, Act 260, Eff. Nov. 15, 1968 ;-- Am. 1976, Act 170, Imd. Eff. June 25, 1976 ;-- Am. 1978, Act 510, Eff. Aug. 1, 1979 ;-- Am. 1988, Act 346, Eff. Jan. 1, 1989 ;-- Am. 2021, Act 43, Imd. Eff. July 1, 2021