The tolling program, the first of its kind in the nation, will charge most drivers who enter Manhattan south of 60th Street during peak hours a $9 fee.

The countdown to congestion pricing in New York City is over. Drivers now must pay a toll to enter Manhattan south of 60th Street.

New York City's controversial congestion pricing plan begins today. Here's what you need to know about how it works, who it affects and what it will cost.