Topic: Cylinders carrying hydrogen
NTSB Recommendation: Require that cylinders that transport hazardous materials and are horizontally mounted on a semitrailer be protected from impact with the roadway or terrain to reduce the likelihood of their being fractured and ejected during a rollover accident.
PHMSA Action: PHMSA, in cooperation with FMCSA, and industry are reviewing the requirements of this recommendation.
Latest PHMSA Response: Letter to NTSB 01/06/03
NTSB Status: OAR
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