Skip Top Navigation

Research Reports

An Evaluation of Flagging Techniques and Devices on Two-Lane Highway Construction Zones


Various methods of controlling traffic through construction zones are examined. The accident statistics concerning construction flagging are summarized, indicating the need for improvements in construction flagging techniques. A research methodology is presented for implementing and evaluating several flagging techniques.


  • Date Published: June, 1988
  • Publication Number: WA-RD 160.1
  • Last Modified: September 13, 2007
  • Authors: Anthony Ifie, Jimmie Hinze.
  • Originator: Washington State Transportation Center (TRAC)
  • # of Pages: 131 p., 2 040 KB (PDF)
  • Subject: Accidents, Construction sites, Evaluation, Flaggers, Highways, Road construction workers, Statistics, Two lane highways, Work zone traffic control.
  • Keywords: Construction flagging, traffic control, flagging techniques.
  • Related Publications:

This abstract was last modified April 29, 2008