"The concept is called induced demand, which is economist-speak for when increasing the supply of something (like roads) makes people want that thing even more. Though some traffic engineers made note of this phenomenon at least as early as the 1960s, it is only in recent years that social scientists have collected enough data to show how this happens pretty much every time we build new roads." https://www.wired.com/2014/06/wuwt-traffic-induced-demand/
What's Up With That: Building Bigger Roads Actually Makes Traffic Worse

The concept is called induced demand, which is economist-speak for when increasing the supply of something (like roads) makes people want that thing even more. Though some traffic engineers made note of this phenomenon at least as early as the 1960s, it is only in recent years that social scientists have collected enough data to show how this happens pretty much every time we build new roads.

WIRED
@freakonometrics There was a recent YT video that kinda debunks this https://youtu.be/zOYLiTj4vag?t=437
The Two Big Economics Lies You Still Believe | Economics Explained

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