WINCHESTER civic chiefs are poised to clampdown on unofficial car-sharing at the Hockley Viaduct near Winchester.
Commuters have been parking at the lay-by on Hockley Link and sharing cars onto work.
Leaving their cars all day deprives other drivers of a space or people wanting to visit the viaduct or the riverside walk along the Itchen.
A city council report said commuters can easily use the South Winchester Park and Ride only a couple of hundred yards away.
Vicki Weston, the portfolio holder for planning and transport, is being urged to agree a four-hour waiting limit with no return for eight hours, Monday to Saturday 8am to 6pm, to stop the commuter use.