New York City’s controversial congestion toll came into effect Sunday at midnight, taxing Midtown Manhattan drivers as much as $9 to make their way around the busiest part of the city. The congestion pricing system will charge drivers entering Manhattan below 60th street $9 during the peak hours of 5 a.

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.

NYC congestion pricing means drivers pay more to enter Manhattan during peak hours. Here are some ways to save.