Speed Signs Cost Less Than You Think
The Neighborhood Traffic Calming Program in the Transportation Department of Bellevue, Washington, put out a 2005 report on the effectiveness of radar speed display signs after installing 20 in various locations and monitoring them over a 5-year period for results, cost and other things. Apart from the results showing the signs were effective and stayed effective over the course of the study, some other prominent things can be taken away from the report, such as the low long-term cost of using electronic display signs.