The City of Lincoln Council says a new one-way system around the annual Christmas market is necessary to deal with the huge crowds that attend.
Spokesperson John Latham says this year's event from the 6-9th December will be safer because of the change.
More top news
Showers will ease away tonight leaving a dry night with clear spells. Temperatures will fall away under clear skies to give a sharp frost.
Rather cloudy with scattered showers, turning frosty later.
A jet from the Lincolnshire-based Red Arrows team has crashed after an incident in Wales.