What are the rules regarding Materials of Trade (MOT)?
A14. Tradespersons, such as plumbers, refrigeration technicians, electricians, etc., may transport specified hazmats without a shipping paper or emergency response information. For gases, this includes only Hazard Classes 2.1 and 2.2. Up to 440 pounds of hazmats, gross weight, may be transported. No one container can be more than 220 pounds. If the material is not used in direct support of the carrier’s trade or occupation, or if a tradesperson transports more than the listed quantities, MOT exemptions are not available.