The Turning Point project, costing �11m, came into force on Sunday with Milton Street and Parliament Street closed to traffic, and bus stops moved.

Nottingham City Transport (NCT) is advising people to think about their routes and to be patient.

According to the city council, Turning Point is designed to create a city centre largely free of traffic.

Barry Birch of NCT said: "Predominantly it means customers coming in from Arnold now walk up on to Upper Parliament Street to get the vehicles because the vehicles now come out the Market Square.

"Trinity Square is shut and by the old toilet block in Trinity Square all the buses are leaving from there for Top Valley, Bestwood etc."

But many commuters and motorists said they did not really see the point of the scheme and some drivers reckoned the idea of having one route in and out restricts traffic flow and does not allow for accidents or other road closures.

Although the new routes come into effect from Monday, work will go on until late next year improving pedestrian areas and lighting.