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DOT/PHMSA RIN: 2137-AE53 Publication ID: Spring 2014 
Title: Hazardous Materials: Safety Requirements for External Product Piping on Cargo Tanks Transporting Flammable Liquids (Wetlines) (MAP-21)  
Abstract: The rulemaking would amend the Hazardous Materials Regulations to prohibit flammable liquids (wetlines) from being transported in unprotected product piping on existing and newly-manufactured DOT specification cargo tank motor vehicles. 
Agency: Department of Transportation(DOT)  Priority: Other Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 49 CFR 173   
Legal Authority: 49 USC 5101 to 5128, 44701    49 CFR 1.45, 1.53   
Legal Deadline:  None
Action Date FR Cite
NPRM  01/27/2011  76 FR 4847   
NPRM Comment Period Extended  03/17/2011  76 FR 14643   
NPRM Comment Period End  03/28/2011 
End of Extension of Comment Period  04/27/2011 
Final Rule  01/00/2015 
Additional Information: HM-213D
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: Businesses  Federalism: No 
Energy Effects: Statement of Energy Effects planned as required by Executive Order 13211.  Included in the Regulatory Plan: No 
RIN Information URL:   Public Comment URL:  
RIN Data Printed in the FR: No 
Agency Contact:
Dirk Der Kinderen
Regulations Specialist
Department of Transportation
Pipeline and Hazardous Materials Safety Administration
1200 New Jersey Avenue, SE,
Washington, DC 20590