The cost of the transportation equipment used by the utility, such as motorcycles, automobiles, motor trucks, trailers, tractors, and other vehicles; battery charging outfits, gasoline and oil storage tanks and pumps, and other garage equipment; horses, harnesses, drays and wagons shall, unless charged directly to operating expense accounts, be charged to this account; also equipment for shoeing horses, and equipment for harness repair shops, vehicle repair shop and auto repair shop, if this equipment is devoted exclusively to these purposes.
220 CMR, 52.117