More than half of the people living in Greater Manchester support congestion charging, a survey suggests.
Fifteen main routes into the city centre will be chargeable
After being given details of how peaktime road-charging will work, and a £3bn investment in the city's transport system, 53% supported proposals.
The poll was commissioned by Greater Manchester's councils and 5,000 residents were questioned.
Councillors are due to meet next week to decide whether to proceed with the government's plans.
Under the congestion charging plans, electronic tags would be issued to charge people passing through an outer ring bordered by the M60 and an inner ring nearer the city centre.
Drivers will pay a deposit for an electric tag, which will monitor journeys on 15 main routes into the city in the morning and evening rush periods.
The scheme proposed by the Association of Greater Manchester Authorities (AGMA) will need government approval.
The trade-off is £3bn worth of public transport improvements, including a Metrolink expansion.
Roger Jones, the chairman of the Greater Manchester Passenger Transport Authority (GMPTA), has said the scheme would mean "less cars on the road and more people on public transport."
However, John McGoldrick, for Manchester Against Road Tolls, said: "It would be amazing if they had not got the result that they wanted.
"We asked some time ago, using the Freedom of Information Act, what was the wording of the survey questions, and they have not given an answer.
"The people in the Greater Manchester area are still being misled into thinking that £3 billion will be given to the city.
"The reality is that the bulk of this money will come from the new toll tax and drivers will never vote for that."