§ 178.345 General design and construction requirements applicable to Specification DOT 406 (§ 178.346), DOT 407 (§ 178.347), and DOT 412 (§ 178.348) cargo tank motor vehicles.
Current through Sep 25, 2026 · Read all of Part 178
Interpretation letters (15)
- Modifying MC 300-Series Cargo Tanks to DOT 400-Series — PHMSA, Mar 16, 2026
- Authorized Materials for Pressure Relief Device on Cargo Tank Motor Vehicles — PHMSA, Jul 2, 2025
- Request to Reinstate an Interpretation Letter Permitting Vents to Remain Plugged — PHMSA, Oct 28, 2005
- Clarification on Venting for Double Bulkheads or Void Spaces for MC 300 and DOT 400 series Cargo Tanks — PHMSA, Apr 7, 2004
- Use of MC 312 or 412 Cargo Tanks to Transport Class 8 Hazardous Materials — PHMSA, May 27, 2003
- Design Modifications for Cargo Tanks — PHMSA, Aug 2, 2002
- Cargo tank specification requirements — PHMSA, Aug 2, 2002
- Installation of Non-Metallic Packing Gland in Specification Cargo Tank — PHMSA, Oct 27, 2000
- Internal Agitation System for DOT 406 and 407 Specification Cargo Tanks — PHMSA, Aug 9, 2000
- Factor of Safety (FS) for Specification Cargo Tanks — PHMSA, Feb 2, 2000