Quote:
Originally Posted by aberdeen5698
The key here isn't "building", it's "pricing". Building has little to do with it. You could have eliminated the Port Mann bridge congestion simply by adding tolls without spending such a huge amount of money on capacity expansion.
And the other factor in the equation is that in a region with a growing population it's not really feasible just add tolls in order to throttle traffic, you also have to provide reasonable alternatives.
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You hit the nail on the head with the growth issue. For any given population, theoretically, there exists an optimal amount of transportation infrastructure. This applies to both roads and public transit. As the population grows, the optimal amount of
all forms of infrastructure grows as well.
Right off the bat, without a pricing mechanism, supply and demand are unlikely to be in equilibrium, and you end up in the situation where it will always appear that there is insufficient capacity. Only when you have an efficient pricing mechanism will it become evident whether there is a surplus or shortage of capacity. We are in this situation right now. With no road pricing of any sort, roads will always have an inefficient amount of congestion regardless of upgrades. Tolls along with smart upgrades (more to improve safety and traffic flow than increase capacity) is probably the best way to reduce congestion. Eliminating choke points probably reduces congestion as much or more than adding extra lanes.
If you are in equilibrium, any population growth will make infrastructure necessary. In other words, even in a region that isn't growing, attempting to control congestion only with tolls would only work if we already have a significant surplus of highway capacity, and we are just using it inefficiently. Adding growth to the equation makes this condition much less likely. It's hard to view Vancouver's road infrastructure as adequate (for the current population, let alone the future) if you have spent much time in other similarly sized metros.
If you make tolls high enough that you force a huge number of vehicles of the road, you are going to lose a lot more from constricting economic growth than you will gain in reduced congestion.
Now I would certainly agree that transit is significantly under built in Vancouver (far more dire situation than with roads), but both are quite pathetic compared to many parts of the world, and we shouldn't be short selling ourselves by only upgrading transit.