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

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

The program had defied many obstacles over the course of decades. It debuted over the weekend on what seemed to be a successful first day.

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,