New York City drivers on Monday had to pay $9 to enter Manhattan under the first such congestion fee in the U.S., which seeks to raise billions for mass transit and reduce traffic jams.

The toll, known as congestion pricing, is meant to reduce traffic gridlock in the densely packed city while also raising money to help fix its ailing public transit infrastructure. Drivers of most passenger cars will pay $9 to enter Manhattan south of Central Park on weekdays between 5 a.

With the tolls now in effect, here's what drivers need to know about the price. How much does congestion pricing cost for cars? For most drivers, it costs $9 to enter Manhattan's