Traffic jams caused by Nash equilibrium
Link: http://nypost.com/2017/02/20/this-nyc-roadway-has-the-worst-traffic-in-the-nation/
The Cross-Bronx expressway is the most congested stretch of road in the US, according the article and anyone who commutes through the Bronx. As a connecting route between not one but three of the cities major bridges, it creates a perfect storm for endless traffic jams and headaches, that for many can not be avoided. The traffic between these points, even through a quick analysis of routes using google maps, can easily be called a Nash equilibrium.
Since it is the most direct route from the George Washington Bridge to the Whitestone and Throgs Neck bridges and vice versa, the best option for the massive amount of people who wish to get between these points will always be the Cross-Bronx. The only other direct route between these points, I-278, will always be slower no matter the traffic on the Cross-Bronx. Simplified down to a two person scenario, if one person decides to take the Cross-Bronx, even though it will make that route slower for the other person, it will still be the best option for the second person to go the same path.