Northern Light
Superstar
The modern milling machines work at a faster rate than the old grinders did, so they'll likely have it on the premises for a month or so (or maybe even less) to focus on the areas that the TTC deems necessary.
The elaborate scheme on the vehicle is to indicate which networks - well at least, a small sampling of them - that it is capable of operating on.
Dan
Does the machine require re-gauging for TTC? If so, how much of a hassle is that, considering it would have to be changed again for use on other systems?