Evaluation of Visibeads in Epoxy markings on I-235, HR-554, 1995

(1995) Evaluation of Visibeads in Epoxy markings on I-235, HR-554, 1995. Transportation, Department of

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Abstract

In recent years, the nighttime wet pavement retroreflectivity of pavement markings has become an important issue. In a effort to continue research in this area, the Iowa Department of Transportation evaluated the effectiveness of Visibeads in the Des Moines metropolitan area. Visibeads are three to four times larger in diameter then conventional glass beads. This larger size provides for better retroreflectivity under nighttime wet pavement conditions. The areas chosen for evaluation do not have roadway lighting, therefore, making them a good choice for Visibeads. Although the DOT has tested Visibeads in the past with moderate success, it is believed that using Visibeads with longer life markings such as epoxy will improve their performance.

Item Type: Departmental Report
Keywords: Evaluation and assessment, Retroreflectivity, Retroreflectors, Traffic safety, Transportation safety
Subjects: Transportation
Transportation > Materials
Transportation > Roads and highways
Transportation > Traffic safety
ID Code: 19738
Deposited By: Iowa DOT Library
Deposited On: 02 Jun 2015 18:57
Last Modified: 03 Aug 2015 12:38
URI: http://publications.iowa.gov/id/eprint/19738