That's the theory, but due to induced demand the opposite tends to happen. Travel in the city gets slower because there's more traffic, it becomes harder to mo

That's the theory, but due to induced demand the opposite tends to happen. Travel in the city gets slower because there's more traffic, it becomes harder to move into and out of the city due to increases in commuter activity, and rush-hour traffic on local streets gets worse as more people try and funnel into these highways.