Great question. I think it's embedded, but I'm not quite sure. It almost looks like it's balasted but contained within the concrete curbs. Here's an older PDF (page 28, 29) showing the cross section...
http://rapidtransit.regionofwaterloo.ca/..._Part7.pdf
(From http://rapidtransit.regionofwaterloo.ca/...nplans.asp)
I had asked about this a long while ago, and I thought they said the portion by Hayward was ballasted then switching to embedded near Courtland.
http://rapidtransit.regionofwaterloo.ca/..._Part7.pdf
(From http://rapidtransit.regionofwaterloo.ca/...nplans.asp)
I had asked about this a long while ago, and I thought they said the portion by Hayward was ballasted then switching to embedded near Courtland.