>>1835814Yes and no. When you have unfulfilled needs in some area that is being served, the fullfillment thereof will lead to increased demand. People previously crawling through city streets to avoid the traffic jam will now consider the highway again, people who bought online to avoid the traffic jam may now consider buying in person, people looking for a new home may consider one with a commute instead of the insanely expensive and shitty stuff in the city center, buisnesses could also consider a more spacious and cheaper lot a bit outside of town now that customers and workers can actually get there etc.
It doesn't, however, generate the demand out of thin air, like some here seem to believe. That demand was previously there already, but hindered by lack of capacity / availability. If you were to saturate the demand, no more increase in traffic would be expected, though that's a state not commonly reached (there's always someone for whom that would be a shortcut).