Two hundred people took to the streets of Cambridge in protest against plans to close off six city streets during the rush hour.
Traders and protestors blocked traffic by marching along Mill Road, East Road and Hills Road to mimic the twice daily closures which could be brought in next year under a controversial City Deal plan.
"It's disgraceful that there has not been a proper consultation about such a massive change and very much for the worse," said Nicola Harris, of Stop Cambridge Road Closures.
"How dare they think they can bring that in without consulting us and say they will ask us afterwards. It's absolutely about the lack of consultation."
"It's disgraceful that there has not been a proper consultation about such a massive change."
Under the proposed City Deal plan to tackle Cambridge's traffic congestion, six roads would be closed to traffic during the morning and evening rush hours.
But traders and many local people fear it will close off large parts of Cambridge and funnel traffic down the few roads that will remain open.
"I think we are eating a bit of humble pie."
Lewis Herbert, of Cambridge's City Deal, said they would listen to the views of protestors.
"I think we are eating a bit of humble pie," he said. "We clearly tried to raise these issues and sometimes it took a while for people to understand it.
"So we accept some of that's over to us but now we will listen and we've got a lot of material, particularly from businesses and residents, and we have to balance those with the needs of travellers."
Click below to watch ITV Anglia's report from Matthew Hudson: