If a map's last-updated date/time is stale, hit your browser's Refresh button.
Click on a map to open a new browser window to show the source of the map (which often also includes textual information, links to traffic cameras, etc.)
These maps come from other Web sites; if they're wrong, I'm sorry, but there's nothing I can do about it.

401

Warning: as of January 2009, MTO has overhauled their traffic map Web pages, and I suspect that this map will stop functioning at some time. Check the Last Updated date each time you use it to see if it's current.

DVP

Gardiner and Lake Shore

Toronto overall (third-party)

Overall Toronto traffic map from globisdata.ca - often fails to load

City of Toronto

The city has a new site showing all current road restrictions, incidents, etc., not only for highways but also for city streets! It also shows traffic flow and links to cameras for both city and provincial highways. You can find it here.