Travelers in Manhattan's central business district — and even those far beyond it — have gotten back tens of thousands of hours thanks to fewer traffic jams.
TL;DR: in this case, it’s when drivers are made to pay a toll to drive into Manhattan south of 61th Street in order to cut down on traffic congestion and pollution, as well as raise revenue to fund more transit.
https://en.wikipedia.org/wiki/Congestion_pricing
https://en.wikipedia.org/wiki/Congestion_pricing_in_New_York_City
TL;DR: in this case, it’s when drivers are made to pay a toll to drive into Manhattan south of 61th Street in order to cut down on traffic congestion and pollution, as well as raise revenue to fund more transit.