Dynamic Speed Feedback Signs, 2014

(2014) Dynamic Speed Feedback Signs, 2014. Transportation, Department of


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Dynamic speed feedback sign (DSFS) systems are traffic control devices that are programmed to provide a message to drivers exceeding a certain speed thresh¬old. A DSFS system typically consists of a speed-measuring device, which may be loop detectors or radar, and a message sign that displays feedback to drivers who exceed a predetermined speed threshold. The feedback may be the driver’s actual speed, a message like “SLOW DOWN,” or activation of a warning device such as beacons or a curve warning sign. For more on this topic by these authors, see also "Evaluation of Dynamic Speed Feedback Signs on Curves: A National Demonstration Project": http://www.trb.org/main/blurbs/172092.aspx

Item Type: Departmental Report
Keywords: 85th percentile speed, Before and after studies, Crash analysis, Countermeasures, Crash analysis, Demonstration projects, Evaluation, Highway curves, Highway Safety, Rural highways, Speed Control, Speed signs, Safety, Traffic control devices, Traffic safety,
Subjects: Transportation
Transportation > Roads and highways
Transportation > Traffic safety
Transportation > Equipment
ID Code: 19254
Deposited By: Leighton Christiansen
Deposited On: 06 Apr 2015 11:14
Last Modified: 06 Apr 2015 11:14
URI: https://publications.iowa.gov/id/eprint/19254