The Downspeeding Decision: Can it work with Canadian spec’s?

Spec'ing powertrains for Canadian operations is a tricky job. Americans take their powertrain spec's pretty seriously as well, but how tough is it to get something that will move 80,000-pound loads on interstate highways? To be fair, our southern neighbors are always pushing the proverbial envelope, but tricky takes on a whole new meaning when it comes to downspeeding.