The GMD-1 locomotives are a special class originally built for use on the lightly tracked Northern Alberta Railway. They no longer serve there and have been dispersed all across Canada on CN's system. Originally built with A1A trucks most have been retrucked to a more standard B-B configuration. I've managed to get several photos of them in various locations but I have yet to manage a shot that shows the trucks. This one was sitting on the CN main at Hydro Junction with another engine.