Tools to Address Speeding
These mobile devices display the drivers travel speed on a large display along with the posted speed limit. Their goal is to encourage compliance.
Their effectiveness tends to be limited to the times when they are displayed - with minimal effect on speed when they are removed. A drop in speed of 25 percent is possible with the devices when displayed.
After a series of applications an overall drop in speed of about 6 percent has been found when traffic volumes are less than 600 vehicles per day. On higher volume streets their impact has been found to be negligible.
- This tool can be effective when displayed and may improve effectiveness with multiple applications on lower volume streets (<600 vpd).
- May be popular with residents.
- Low cost measure.
- Can be used with Speed Alert Program.
- Easily deployed.
- Minimal effectiveness when device is removed.
- Minimal long-term impact on travel speeds.
- Requires staff time to & from location to location.
- Subject to vandalism.
|Summary of Effectiveness|
|Streets to Use On Collector, Local||Local/Collector|
|Use on Bus Route||Yes|
|Use with Curbs and Gutters||Yes|
|Spot or Area-wide Use||Spot|
|Emergency Service Access Issues||No|
|Impacts on Arterials||Unlikely|
|Change in % Truck||Unknown|
|Dependence on enforcement||No|
|Level of Violation||Low|
|Aesthetics and Landscaping||No|