Is NYC's congestion pricing working to improve traffic in Manhattan? Here's a look at the MTA data for the first three weeks.

Drive times into Manhattan have dropped dramatically since the institution of New York’s congestion tolling program, according to data released Wednesday by the MTA — with the most significant improvements at the Holland Tunnel.

CNBC's Mike Santoli reports on the latest news.

The MTA previously reported that the new fees, which launched on Jan. 5, led to 7% fewer vehicles entering the tolling zone south of 60th Street during the first several days they were in effect, compared to a similar period last year.