The City of Mandurah are one of the first locations in the country to trial a speed radar targeting boats on local waterways.
Located under the Mary Street bridge, the speed radar has been installed for a number of weeks in an effort to help keep the community safe.
Similar to those used in many suburban streets, the radar unit displays the speed of approaching boats and a 'green happy face' for those below the limit and a 'red unhappy face" for boats exceeding the speed limit.
The new addition has already shown some positive results, with boats slowing down significantly in the area.
Mandurah mayor Rhys Williams said it was a "fantastic" initiative to reduce speeding through the canals, which is an ongoing issue with residents.
"This technology for use on the water is relatively new and I'm so pleased Mandurah is one of the first in the country to trial it," he said.
"The trial will last around six months when the results will be assessed for future use."
The need for the speed radar was prompted after ongoing safety concerns about speeding boats and potential damage to the waterway walls from excess wash.
Developed by a Queensland company, the prototype speed radar unit trial was initiated by the Port Mandurah Resident's Association in conjunction with the City of Mandurah and the Department of Transport.
The Mandurah trial is being monitored by a number of potential customers around the country, including in New South Wales, for use in the Sydney Harbour.