RSA 250:3: Admission; Regulations.

Every railroad and bus line maintaining a park or place or resort may charge a reasonable fee for admission thereto and shall prescribe suitable rules and regulations for the conduct and government thereof, which, when approved by the department of transportation in writing, and when printed copies thereof shall have been posted in and about said park or place of resort, shall be respected and obeyed by all persons entering upon said premises or frequenting the same.