Lillington residents "could not believe their eyes" when they saw a 'new version' of a speed hump had been added to a road in the area.
A tree root going across the road in part of Haddon Road and lifting the tarmac has been causing issues for some time.
One resident said: "They [Warwickshire County Council's highways department] investigated a long while back but made problems worse.
"Now, instead of fixing problem properly for the safety of road users, they have painted white lines on it to turn it into speed hump - or half a speed hump."
Warwickshire County Councillor Sarah Boad (Lib Dem, Leamington North) said work was underway for the tree and its roots to be removed by poisoning it and then having it cut down in about nine months' time.
A new tree will be planted in its place.
She said that the road markings had been put down under the advice of a surveyor and "with the best of intentions" to prevent motorists hitting it at speed and that she thought the removal of just the root could cause the tree to become unstable.