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

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,

With congestion pricing now in effect in NYC, officials are cracking down on obscured license plates, or "ghost plates," to avoid the toll.