Work started this week on the installation of four digital road signs which warn of tidal flooding.
The new LED signs will replace the four manual signs installed in 2005.
One will be positioned on South Beach Road at Hunstanton at the roundabout with Southend Road and Oasis Way, two will be installed in Heacham at Jubilee Road and South Beach Road and one in Beach Road at Snettisham.
The signs are a result of talks between the Environment Agency, West Norfolk Council and the Norfolk Local Resilience Forum to improve the way the public are informed of tidal flooding.
A spokesman for the Environment Agency said the new signs would be brighter, more visible and provide timely information.
They will be illuminated when tidal flood alerts and flood warnings are issued and will also provide information on high water times and if evacuation is necessary.
Sadia Moeed, operations manager of the Environment Agency, said: “The new signs are a great addition to our flood warning service and how we warn and inform members of the public to potential tidal flooding.
“The up-to-date information and improved visibility is a great benefit for the local community and visitors to the area who may not be aware of the flood risk.”
The agency has a flood warning service and residents can register at www.gov.uk/flood or call the floodline on 0345 9881188.