Montana Title 61. Motor Vehicles § 61-8-388. Approaching stationary emergency vehicle or stationary highway worker vehicle

(a) 20 miles an hour below the posted speed limit on the interstate if the operator of a moving vehicle is able to move lanes, or to one-half the posted speed limit if the operator of a moving vehicle is not able to move lanes;

(b) 30 miles an hour below the posted speed limit on a state highway or county road if the operator of a moving vehicle is able to move lanes, or to one-half the posted speed limit if the operator of a moving vehicle is not able to move lanes; and

(c) one-half the posted speed limit on any other road; and

(a) if on a multi-lane highway, move to a lane that is not adjacent to the lane in which the stationary law enforcement vehicle, authorized emergency vehicle, or highway worker vehicle is located; or

(b) move over as far as safely possible under the circumstances.