After the date following January 1, 2005, that a motor carrier is required to file a Motor Carrier Identification Report Form (MCS-150) according to the schedule set forth in §390.19(a) of this chapter, the motor carrier may not transport in interstate or intrastate commerce any of the following hazardous materials, in the quantity indicated for each, unless the motor carrier holds a safety permit:
(a) A highway route-controlled quantity of a Class 7 (radioactive) material, as defined in §173.403 of this title;
(b) More than 25 kg (55 pounds) of a Division 1.1, 1.2, or 1.3 (explosive) material or an amount of a Division 1.5 (explosive) material requiring placarding under part 172 of this title;
(c) More than one liter (1.08 quarts) per package of a “material poisonous by inhalation,” as defined in §171.8 of this title, that meets the criteria for “hazard zone A,” as specified in §173.116(a) or §173.133(a) of this title;
(d) A “material poisonous by inhalation,” as defined in §171.8 of this title, that meets the criteria for “hazard zone B,” as specified in §173.116(a) or §173.133(a) of this title in a bulk packaging (capacity greater than 450 L [119 gallons]);
(e) A “material poisonous by inhalation,” as defined in §171.8 of this title, that meets the criteria for “hazard zone C,” or “hazard zone D,” as specified in §173.116(a) of this title, in a packaging having a capacity equal to or greater than 13,248 L (3,500) gallons; or
(f) A shipment of compressed or refrigerated liquefied methane or liquefied natural gas, or other liquefied gas with a methane content of at least 85 percent, in a bulk packaging having a capacity equal to or greater than 13,248 L (3,500 gallons).
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