The first US vehicle congestion charging scheme is being rolled out in New York City on Sunday.
Car drivers will pay up to $9 (£7) a day, with different rates for other vehicles.
The Congestion Zone covers an area south of Central Park, encompassing well-known locations such as the Empire State Building, Times Square and the financial district around Wall Street
The scheme aims to ease New York's notorious traffic woes and raise billions for the public transport network, but has met with opposition, including from prominent New Yorker and President-elect Donald Trump.
The congestion charge was first proposed by New York State Gov. Cathy Hochul two years ago, but was delayed and revised after complaints from some commuters and businesses.
The new plan revives a scheme she halted in June, saying it had “too many unintended consequences for New Yorkers.”
Most drivers will be charged $9 once a day to enter the congestion zone during peak hours, and $2.25 at other times.
Small trucks and non-commuter buses will pay $14.40 to enter Manhattan during rush hour, while larger trucks and tour buses will pay a $21.60 toll.
The charge was met with much opposition, including from taxi drivers' associations.
But the most prominent opposition comes from Trump, a native New Yorker who has vowed to end the scheme when he returns to office this month.
Local Republicans have already asked him to step in.
Congressman Mike Lawler, who represents a suburban district in upstate New York, asked Trump in November to commit to “ending this absurd cash grab from congestion pricing once and for all.”
A judge rejected an eleventh-hour effort Friday by officials in the neighboring state of New Jersey to block the scheme based on its environmental impact on neighboring areas.
Last year, New York City was named the world's most congested urban area for the second year in a row, according to INRIX, a traffic data analysis firm.
Vehicles in midtown Manhattan were traveling at 11 mph (17 km/h) during the morning rush hour in the first quarter of last year, the report said.