There was a Legislative act signed by US president Barack Obama in July of 2013 called Moving Ahead for Progress in the 21st Century Act or MAP-21. As a result, the Pipeline and Hazardous Materials Safety Administration (PHMSA) is making changes to the Hazardous Materials Regulations (HMR). These changes will incorporate some provisions from some of the special permits that have a proven safety record and have been widely used over an extended period of time. The intent in doing this is to provide widespread access to regulatory flexibility normally offered in special permits and removing the need for abundant renewal requests. The adopted amendments will also reduce paperwork burdens and help commerce while sustaining an appropriate level of safety.
Special permits set out variances to the requirements found in the regulations, but still has a level of safety that is equal to the safety level required otherwise in the regulations. The MAP-21 legislation required PHMSA to take a look at the special permits that have been in effect for 10-years. PHMSA conducted an investigation of all active special permits and categorized them, as appropriate, as suitable for inclusion into this rulemaking.