Speed sign research

Research into the use of Radar Speed Displays:

City of Bellevue - Stationary Radar Sign Program 2009 Report

To date, the City of Bellevue has installed 31 stationary radar signs. This report shares Bellevue’s experience with radar signs, the challenges that have faced staff in the past and our recommendations on how the Stationary Radar Sign Program should operate in the future. In addition, the lessons learned from user experience and community response are detailed.


City of Garden Grove - Speed Radar Feedback Sign Study 2003

As a result of the 85th percentile speed reduction and the acceptance by the motoring public and school officials it has been determined that the installation of Radar Signs at school pedestrian signals has had a beneficial result in the reduction of speed within a school zone. It is also shown that the use of such devices can be beneficial in local neighbourhood traffic calming projects if properly evaluated and applied


Joint Standing Committee on Road Safety (Staysafe) - Inquiry into school zone safety

The overall consensus is that school zones have made a major contribution to road safety. The creation of school zones has reduced the risk of fatality and injury for school aged children and made motorists, students and their carers more conscious of risks, reduced crash severity by reducing vehicle speeds and introduced substantial engineering treatments to improve road conditions in and around school precincts. There is still room for refinement in the operation of existing school zone precincts and the Committee has made a series of recommendations...


Harnessing the Power of Feedback Loops

In 2003, officials in Garden Grove, California, a community of 170,000 people wedged amid the suburban sprawl of Orange County, set out to confront a problem that afflicts most every town in America: drivers speeding through school zones...


Study Reports on the Effectiveness of Photo-Radar and Speed Display Boards

Results of the study revealed "that both speed display boards and photo-radar effectively reduce vehicle speeds while deployed" and are "particularly effective in reducing the number of vehicles traveling ten or more miles over the speed limit." However, "only the display boards demonstrated carry-over effects," particularly in the long term. Already the most cost-effective of the speed control devices, the speed reduction capabilities of display boards can be greatly enhanced with "intermittent police enforcement."


Innovative Traffic Control Devices for Improving Safety at Rural Short-Term Maintenance Work Zones

A Texas Transportation Institute research project to determine if innovative traffic control devices could improve safety at short-term rural maintenance work zones. This project examined several innovative countermeasures to determine if they would produce a positive safety benefit at short-term rural work zones. The speed display trailer produced the largest speed reductions of all the devices tested and workers felt that the installation and removal of the trailer was reasonable for a short-term work zone.