Each railroad company chartered by this State shall be required to file in the office of the Public Service Commission, on or before the thirty-first day of March in each year, a full and detailed schedule and report of the condition and operations of the road for the current year ending on the thirty-first day of December then immediately preceding. Such schedule and report shall be made in accordance with the following rules and form:
- (1) All liabilities, including interest accrued on funded debt, shall be entered upon the books in the month when they were incurred, without reference to the date of payment;
- (2) Expenses shall be charged each month with such supplies, materials and similar articles as have been used during that month, without reference to the time when they were purchased or paid for;
- (3) No expenditure shall be charged to property accounts except it be for actual interest during construction, equipment or other property, unless it is made on old work in such a way as clearly to increase the value of the property over and above the cost of renewing the old work and in such cases only the amount of increased cost shall be charged, and the amount allowed on account of the old work shall be stated;
- (4) Mileage of passenger and freight trains shall include only the miles shown to be run by distances between stations and allowances made to passenger or freight trains for switching and all mileage of switch engines, computed on a basis of eight miles per hour for the time of actual service, shall be stated separately;
- (5) Season ticket passengers shall be computed on the basis of twelve passengers per week for the time of each ticket; and
(6) Local traffic shall include all passengers carried on local tickets and all freight carried at local tariff or special local rates and all other traffic shall be considered through.
These rules shall be subject to such changes thereof as may be made by the Public Service Commission under the authority conferred on it by Section 58-17-1900.