Courtesy Speed Display Signs (CSDS) Help Reduce Travel Speeds in the Shire of Dardanup

Posted on: Tuesday, 26 June 2018 at 12:00:00 AM

Courtesy Speed Display Signs (CSDS) Help Reduce Travel Speeds in the Shire of Dardanup

The Shire of Dardanup RoadWise Committee loaned the WALGA RoadWise courtesy speed display signs during May which were trialled at a couple of known suburban hot spots for speeding drivers. 

Two locations with a posted 50km/hr speed limit were chosen in response to ongoing issues with high speeds in the area. 

The courtesy speed display signs were programmed to use the happy face if drivers where adhering to the speed limit and a sad face if they were travelling too fast and needed to slow down.

Feedback on the Shire of Dardanup Facebook page about the use of the signs was very positive and generated a great deal of discussion in the community about safe speeds.

Data collected during the 17 days the CSDS were in place showed, on average, people were driving below the posted speed limit of 50km/hr. 

Average speed entering the radar range was 49.3km/hr but dropped to 45.8km/hr when leaving the radar range. This is an average reduction of 3.5km/hr over the 54,748 registered vehicles that travelled past the courtesy speed display signs.

Historically, one of the roads chosen in the trial had been a road where speeding levels have been high. 

The trial of the courtesy speed display signs combined with a regular police presence for speed enforcement has raised awareness of safe speeds in this area and most motorists travel with care.

Feedback from the Shire of Dardanup was positive, with the courtesy speed display signs reminding drivers to be more aware of the speed they are travelling.


Pictured above: The CSDS (recently loaned by the Shire of Dardanup) are available for loan through WALGA's RoadWise.


To find out how to borrow the WALGA RoadWise CSDS, download the Courtesy Speed Display Signs Kit by completing the form on the WALGA RoadWise website at

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