The New York City tolling plan, the first of its kind in the country, finally debuted after being halted just weeks before its original start date last summer. Officials started it on a Sunday to work out the kinks before rush hour traffic Monday morning.

New York City kicked off the first congestion pricing program in the US, part of an effort to reduce the number of vehicles in the world’s most traffic-clogged urban area while raising money for transit infrastructure.

New York’s new toll for drivers entering the center of Manhattan debuted Sunday, meaning many people will pay $9 to access the busiest part of the Big Apple during peak hours.