I was rolling along the Perimeter Highway again today around noon, and I saw a headlight to the north on CP's La Riviere subdivision. I pulled off the road and set up to wait for the train to come. It took longer than I thought it would, but finally CP 3090 showed up pulling a little train. 3090 was poking along at just a bit faster than walking speed!
I guess the speed limit at that location is 10 MPH!