(1) for purposes of 164.245 (criminal trespass 2), a landowner or their agent may close the landowner's privately owned premises to motor-propelled vehicles by posting signs on or near the boundaries of the closed premises at the normal points of entry as follows:

(a) signs must be no smaller than eight (8) inches high & eleven (11) inches wide

(b) signs must contain the words "Closed to Motor-propelled Vehicles" or words to that effect in letters no less than one (1) inch tall

(c) signs must display the name, business address & phone number, if any, of the landowner or their agent AND

(d) signs must be posted at normal points of entry & be no further apart than 350 yards

(2) anyone is in violation of 164.245 (criminal trespass 2) if they operate or ride on or inside a motor-propelled vehicle on privately owned premises when the premises are posted as provided in (1) & they don't have written authorization to operate a motor-propelled vehicle on the premises

(3) nothing in this statute prevents emergency or law enforcement vehicles from entering onto land closed to motor-propelled vehicles