North Dakota has now instituted on its own that no crude oil can be exported (out-of-state) with a a higher than 13.7 PSI content of ethane , propane and other natural gas liguids (NGLs). It must be treated FIRST. Automobile gasoline has a 13.5 PSI. This is to counteract the increased railroad tanker accidents. Interestingly , Buffett who owns BNSF also bought the company which manufactures the tanker cars. BNSF has increased the cost of shipping Bakken oil in the old tank cars by $700 per car as a liability cost. Extractors , tar sands operators , etc. (Koch Brothers) are angry. Buffet wants them to buy the new safer cars, and the lease holders of the cars want no change. Minnesota's Homeland Security has announced that hundreds of thousands of folks live within 1/2 mile of the tracks which carry such inflammable oil products and to be on alert.
Additionally , with all the Keystone fuss , the pipeline companies have expanded by over 13,000 miles existing pipelines to service the increased fracked/shale production.