RSA 243:50: Rates, Fares and Charges.

I. Every railroad shall print schedules of rates, fares and charges of the carrier for the transportation of passengers and baggage or for any other service and file these schedules with the commissioner. Such schedules shall be open to public inspection.

II. The commissioner shall adopt rules, pursuant to RSA 541-A, relative to the form and content of the filing and printing and the time within which the filing and printing are required.

III. Unless the commissioner so orders, no carrier shall change a rate, fare or charge which has been filed with the commissioner, except after 30 days' notice to the commissioner and notice to the public as the commissioner directs.