You'll be able to get the EMS (York, Mississauga, Simcoe, Oshawa, Halton, etc). The MTO highway maintainence talkrgroups are also on Fleetnet. Take a look at this link: http://www.radioreference.com/apps/db/?sid=861
If you look under the Mode column of each section, the BCT15 will be able to monitor anything that says A (analog).
Heh, Hodet and I were both typing the same reply at the same time!
As you've seen from that list, a LOT of it (OPP) is digital, but it's definitely a system worth listening to. For example, by just listening to the King City tower, I can hear the EMS from Brampton to Oshawa, Vaughan to Orillia. Kinda cool.