If you live in or near an area where farming is a significant part of the economy, then you are probably familiar with the site of a truck or tractor pulling a trailer with one or more nurse tanks of anhydrous ammonia.  The purpose of this article is to identify and explain the applicable Hazardous Material Regulations of PHMSA/USDOT for the transportation in commerce of anhydrous ammonia in nurse tanks by motor vehicle (i.e. highway). (more…)