Northern Light
Superstar
Now, if you're suggesting that, in the 10 to 20 years that follow the introduction of the new highway, we will see the additional capacity slowly fill up with new commuters, then that has nothing to do with induced demand. That's demand growth due to new population and new employment, and those trips will accumulate with or without the introduction of the new highway. Personally, I'd rather we have excess capacity to fill rather than be above capacity wondering where to put the demand. That simply isn't a reason to cancel the project altogether. Within 20 years of Ontario Line being built, we will be near capacity. Perhaps there's no point building that either due to the induced demand.
If the land is employment land and/or built to be housing that would otherwise not be permitted, or viable but for construction of the highway; then the highway creates the condition for the sprawl and leads the self-fulfilling prophecy.
I love transit. I want more transit. I want the Ontario Line, I want Eglinton Crosstown to open already so we can build the east and west extensions, and I want mixed use corridors throughout our City to provide additional capacity for all modes of travelers. But I also understand the reality faced by individuals at the north end of Peel Region and York Region. I understand that Highway 401 between 410 and 400 is one of the biggest bottlenecks in the City that needs parallel corridors for additional capacity. That's why I'm in favour of this project.
If you resolve the problems in northern Peel and York via a highway; you not only create new and worse problems (development of said farmland; which all suggestions to the contrary is not inevitable); you also dictate the form of said development.
It will be built to serve, to be served by, and oriented to the highway.
There will be no material transit; it won't be viable, because all that was built was highway-oriented.
Low-density, sprawl'ish, expensive to serve, not very walkable or bikeable; long trips to get to anywhere, because everything is spread out.
There is a problem in the areas you identify.
It is best addressed by new investments in pedestrian, cycling and transit infrastructure; and by better use of the automotive infrastructure we already have.
To the extent that is insufficient, smaller, strategic investments in a 4-lane, urban road or rural, small, highway, could be made through portions of the planned ROW.