Drivers are facing congestion is one of the busiest roads in Burgess Hill because of work nearby.
They are taking a detour up and down Junction Road because of diversions from Leylands Road, where resurfacing work taking about five days is being done.
But Junction Road is already a notorious bottleneck becuase of the vastly increased number of cars parked in the road and its winding hilly route.
At peak times drivers are becoming snarled up in jams, and this morning as the school runs began there were problems in the road.
The work in Leylands Road is to repair sections of road damaged by bad weather.