This owner-operator describes what it takes to drive a double trailer rig:

He calls them wiggle-wagons and makes this recommendation to drivers: “There is more to know when operating this type of unit, but these are the main points.  Fed Ex is pressing the government to allow twin 33′ trailers.  They are making a good case for the allowance stating that it will increase productivity and decrease fuel consumption.  With that in mind, I recommend that you get your doubles endorsement in order to make yourself more versatile and attractive to prospective employers. – See more at: http://www.365trucking.com/blog/2015/5/16/so-you-want-to-pull-wiggle-waggons-a-joey-slaughter#sthash.vWr9Zb5W.dpuf”

It seems to me that it requires additional training and experience to drive these things. And I still need convincing (I am told that DOT might be studying this) that the sought-after increase in productivity & decrease in fuel consumption will not be paid for with the price of an increase in crash deaths.

Yesterday, the Senate voted 56 – 31 in favor of the Wicker Amendment: “Specifically, that amendment would require U.S. Department of Transportation to complete a comprehensive safety study before longer trucks are permitted on highways. It would also require the agency to conduct a formal rulemaking process with public notice and comment period. ” http://www.thetrucker.com/News/Stories/2015/11/10/Senatevotes56-31toopposetwin33s.aspx

We all share the road with trucks. Let’s make sure that our travels are as SAFE AS POSSIBLE.