West Sussex Highways is changing a road in Clymping to slow traffic and deter motorists from using it as a rat run.
The speed limit in Horsemere Green Lane is being reduced from 40mph to 30mph, and four one-way traffic islands will be constructed at different locations so vehicles must give way to oncoming traffic.
Accompanying signs will be installed to show which direction has priority.
Work starts on Monday, June 19 and Horsemere Green Lane will close for up to five weeks.
A signed diversion will be in place via Yapton Road, the A259 and Church Lane.
Residents living in Horsemere Green Lane will still be able to access their homes for the duration of the works.
West Sussex County Council’s Cabinet Member for Infrastructure and Highways, Bob Lanzer, said: “These changes have come about after consulting with the local community in Clymping.
“Reducing the speed limit and introducing the traffic islands will slow traffic and make it less appealing for motorists to use Horsemere Green Lane as a short cut.”
Clymping Parish Council Chairman Colin Humphris said: “It is good to see this project come to fruition as residents have been concerned for many years for the safety of both motorists and pedestrians.
It’s a good use of the developers' contributions from the developments along Horsemere Green Lane dating back to the late 1990s.”
The project costs £25,000.