Mich. Comp. Laws § 436.202: Public drinking on train prohibited; exception.

Sec. 2.

No person shall publicly drink any intoxicating liquor as a beverage in any railway train or coach, or interurban car, or give, or cause to be given to any other person therein, intoxicating liquor as a beverage, except in a compartment or place where such liquor is sold or served under the authority of a license lawfully issued.