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Work Zone Safety Information Clearinghouse

Library of Resources to Improve Roadway Work Zone Safety for All Roadway Users

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Practice

Use of drone radar and automated flaggers in work zones

Wisconsin has used drone radar primarily in rural work zones (stationary construction zones/maintenance zones/mobile operations), and it was perceived to be somewhat effective as a speed control measure. One problem is that if drivers become accustomed to lack of actual enforcement at a location, the drone radar may tend to be ignored. WisDOT does not have an established policy/guidelines on the use of drone radar.

Wisconsin has used automated flaggers in urban stationary construction zones. The type of automated flaggers used is 2-section signal head (steady or flashing red, steady yellow). It was perceived to be very effective in controlling traffic.

Problem/disadvantage: Must ensure motorists properly understand the displayed sign/signal indications.

Comments: Similar to a typical flagging operation, it is critical for the operator of the automated flagger to have approaching traffic in view while operating the device and to follow proper procedures in determining the appropriate time to stop and release traffic. Also, to command respect from an approaching motorist it can be beneficial for the operator to be in view of the driver.

State/Agency: Wisconsin
Topics: Drone Radar; Mobile Operations; Portable Traffic Signals

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