The first congestion pricing plan in the U.S. has begun, charging most drivers $9 a day to enter the lower half of Manhattan. The long-debated plan is projected to raise up to $800 million a year for the city's aging public transit system.

Manhattan commuters are already marveling at what appears to be less traffic — and grousing about the new $9 tolls.

For drivers, the $9 congestion pricing fee isn't the only expense that may be waiting as you enter the Central Business District. CBS News New York's Doug Williams tells us what you need to know to avoid getting a ticket,

The NYPD is stationing officers at Central Business District entry points with patrol cars looking for illegal or obstructed license plates.