SWZDI Home Projects Board of Directors Events

Vehicle Mounted Rollup Warning Sign

Status: Complete

Description: The rollup sign holder consists primarily of an L-shaped hollow steel tube with a 2-inch square cross-section. One end of the tube is designed to fit into a standard 2-inch trailer hitch sleeve on the rear of a light-duty maintenance vehicle and the other end has hardware necessary for supporting a conventional 4-foot rollup sign. The Marquette County Highway Department (WI) agreed to retrofit five vehicles with 2-inch sleeves and use the signs for two weeks of retrieving and replacing shoulder material at various locations in the county on two-lane roads. Opinions of the device were elicited from a focus group interview of all 5 vehicle drivers and their supervisor. It was found that the rollup sign holder serves a need for a warning sign close to a vehicle during moving operations. There is a perception that such signs improve safety.

Report: MwSWZDI-2002-Horowitz-Vehicle_Mounted_Rollup_Warning_Sign.pdf 383 kb (published 2002)

State conducting research: Wisconsin


  • Lang Products


  • Notbohm, Thomas (WisDOT)
  • Horowitz, Alan J. (University of Wisconsin, Milwaukee)
Iowa State University does not discriminate on the basis of race, color, age, ethnicity, religion, national origin, pregnancy, sexual orientation, gender identity, genetic information, sex, marital status, disability, or status as a U.S. veteran. Inquiries regarding non-discrimination policies may be directed to Office of Equal Opportunity, Title IX/ADA Coordinator and Affirmative Action Officer, 3410 Beardshear Hall, 515 Morrill Road, Ames, Iowa 50011, Tel. 515 294-7612, Hotline: 515-294-1222, eooffice@iastate.edu.