StacksVerified U.S. regulatory reference

49 CFR §174.86

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)For molten metals and molten glass shipped in packagings other than those prescribed in § 173.247 of this subchapter, the maximum allowable operating speed may not exceed 24 km/hour (15 mph) for shipments by rail.
  2. (b)For trains transporting any loaded, placarded tank cars containing a material poisonous by inhalation, the maximum allowable operating speed may not exceed 80.5 km/hour (50 mph) for shipments by rail.