With congestion pricing now in effect in New York City, many commuters may be asking how do the new tolls work?Most already know about the $9 toll to enter Manhattan at or below 60th Street, in what's called the Congestion Relief Zone,

A dizzying array of exemptions, credits and existing tolls makes it tricky to calculate how much drivers will actually pay when they enter Manhattan south of 60th Street.

New York’s much-debated plan to charge drivers to enter the center of Manhattan is set to take effect Sunday just after midnight, following years of bureaucratic and legal roadblocks. The goals of what is known as “congestion pricing” are to reduce gridlock and pollution and raise revenue for public transit.