Can you not just make land use policies around the highway that prevent sprawl? This is the greenbelt... should just remain farmland and wooded areas just now with a highway.
Of course Douggie would never allow it, his developer buddies want this highway as an excuse to build around it and elsewhere in the greenbelt.
I see the 413 becoming a significant election issue.
The trouble with trying to set up land use policies is that the common complaint is that this infringes on the land owners rights to use their land as they please and/or kills the value of their lands. Often these lands are farmland and so there is little opposition to letting independent farmers have control over their lands. However when the lands are sold to developers and the developers propose to build a subdivision municipal politicians have little power to direct how the lands are developed.
Side comment: I'd love to see a study on how many lane/km's of highway has been constructed/expanded in S Ontario since say 1980 compared to how many km's of public transit has been built/expanded. Convert those to the person/passenger carrying capacity of each and I'd like to see if there has been more highway construction or more public transit construction over the past 40 yrs.