Congestion pricing could generate revenue many cities are desperate for, while simultaneously easing traffic and improving air quality. But legal challenges and President-elect Do

While commercial trucks entering Manhattan will be charged depending on the truck size and time of day, there are workarounds.

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

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.