But of course
Those are the new spotting markers/system. Currently they are testing it at Burlington and Whitby, in both directions. If you go to the east end of the platform you'll see the same two signs on that side. Instead of aiming for a single point (the "10" or "12" marker for the cab and the black or white "L" for the locomotive) they are now experimenting with a spotting "zone". The MR stands for "
Mini
Ramp". As long as we stop in between the two signs we are properly spotted for the mini ramp. Stopping short of the 1st sign means we're short and will have to pull up. Stopping pasted the MR with the line across it means you've overshot the mini ramp. The problem with the single sign markers (the "10" "12" and "L") is that there is no consistency between stations. At some stops you could stop a 5 feet short of the marker and you would be spotted, at others stopping 5 feet away for the marker and you would be short of the ramp. Also this way there's no more guess work as to when your on or off the ramp, which we obviously can't see otherwise since its hundreds of feet away.
There are no spotting markers for the old F59 on the west end. We just guess/estimate when we're about 60ft(length of the old engines) past the 10 marker.