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In the roads case, the demand was always there. Increased capacity means that more demand is satisfied, even if the QoS for the satisfied demand went up. Cons
by anamax 5y ago
In the roads case, the demand was always there. Increased capacity means that more demand is satisfied, even if the QoS for the satisfied demand went up.
Consider the person who lived close to work because commuting wasn't possible. With increased capacity, living elsewhere becomes an option. They wouldn't exercise that option unless they preferred it. That demand predates the availability of the option.
- adamjb 5y agoThat's just the paradoxical thing about it though. With induced demand congestion doesn't improve so travel times don't improve, so there is the same (dis)benefit to moving as there was before and living elsewhere doesn't, or rather shouldn't, become an option.
- beerandt 5y agoYet additional demand is still being satisfied, even if QoS returns to a certain equilibrium. The problem is that the added capacity still isn't sufficient to satisfy the extant demand of people wanting to get to town.