Section 173.4 - Small quantities for highway and rail(b)Non-specification cargo tanks for petroleum products. Notwithstanding requirements for specification packagings in subpart F of this part and parts 178 and 180 of this subchapter, a non-specification cargo tank motor vehicle having a capacity of less than 13,250 L (3,500 gallons) may be used by an intrastate motor carrier for transportation of a flammable liquid petroleum product in accordance with the provisions of paragraph (d) of this section.(c)Permanently secured non-bulk tanks for petroleum products. Notwithstanding requirements for specification packagings in subpart F of this part 173 and parts 178 and 180 of this subchapter, a non-specification metal tank permanently secured to a transport vehicle and protected against leakage or damage in the event of a turnover, having a capacity of less than 450 L (119 gallons), may be used by an intrastate motor carrier for transportation of a flammable liquid petroleum product in accordance with the provisions of paragraph (d) of this section.(d)Additional requirements. A packaging used under the provisions of paragraphs (a), (b) or (c) of this section must- (1) Be operated by an intrastate motor carrier and in use as a packaging for hazardous material before October 1, 1998;(2) Be operated in conformance with the requirements of the State in which it is authorized;(3) Be specifically authorized by a State statute or regulation in effect before October 1, 1998, for use as a packaging for the hazardous material being transported;(4) Be offered for transportation and transported in conformance with all other applicable requirements of this subchapter;(5) Not be used to transport a flammable cryogenic liquid, hazardous substance, hazardous waste, or a marine pollutant (except for gasoline); and(6) For a tank authorized under paragraph (b) or (c) of this section, conform to all requirements in part 180 (except for §180.405(g)) of this subchapter in the same manner as required for a DOT specification MC 306 cargo tank motor vehicle. 80 FR 72924, 11/23/2015; 74 FR 2253, 1/14/2009, as amended at 75 FR 5393, 2/2/2010; 76 FR 3368, 1/19/2011; 79 FR 40610, 7/11/2014; 80 FR 72924, 11/23/2015