Speed Signs Cost Less Than You Think
The Neighborhood Traffic Calming Program in the Transportation Dept of Bellevue, Washington, made a 2005 report on the efficacy of radar speed display signs after installing 20 in numerous locations and monitoring them over a 5-year period for results, cost and other factors. Aside from the results showing that the signs were effective and stayed effective over the course of the study, some other important things can be taken away from the report, eg the low continuing expense of using electric display signs.
