(1) Whenever 2 registration plates are issued for a vehicle, one plate shall be attached to the front and one to the rear of the vehicle. Whenever only one registration plate is issued for a vehicle, the plate shall be attached as follows:
(a) If the vehicle is a truck tractor or road tractor or a motor truck issued the plate under s. 341.405 (2), to the front.
(b) For any other vehicle for which only one plate is issued, to the rear, except that a plate issued to or for a municipality under s. 341.26 (2m) may be attached to the front of the vehicle if the design or use of the vehicle is such as to make a plate attached to the rear difficult to see and read.
(1m)
(a) Except as provided in pars.
(b) to (d), any registration decal or tag issued by the department shall be placed on the rear registration plate of the vehicle in the manner directed by the department.