Plans to introduce Britain’s biggest congestion charge zone in Manchester began this week.
However opponents said a proposed referendum was unbalanced and incomprehensible, according to the Finacial Times.
The Greater Manchester Momentum Group (CMMG) a business alliance who oppose the charge, said almost half Manchester’s residents did not know about the plans, despite a 14-week consultation exercise.
The referendum is due to be held in December.
There would be two charging rings, one just inside the M60 and another around the city centre.
Drivers would have to pay to cross when entering in the morning and leaving at night.