00932115

Component

https://doi.org/10.3141/1794-01

http://scholar.google.com...rich&publication_year=2002

The Virginia Department of Transportation's (VDOT's) "Road and Bridge Specifications" require that retroreflective sheeting used on construction and maintenance activity signs be a fluorescent prismatic lens type that is retroreflective at entrance angles as great as 50 deg with observation angles of 0.2 deg and 0.5 deg. Because the validity of this requirement was recently questioned, this study was conducted to determine if the specification were appropriate or not. The study results indicate that VDOT's wide entrance angle requirement is not appropriate for construction and maintenance signs and that observation angles should receive more attention than entrance angles.

This paper appears in Transportation Research Record No. 1794, Safety and Maintenance Services.

English

p. 3-10

2002

Transportation Research Record

0309077206

Figures (5) ; Photos (1) ; References (18) ; Tables (1)

Angle of incidence; Retroreflectivity; Sign sheeting; Specifications; Traffic signs; Validity; Work zone traffic control

Virginia Department of Transportation

Entrance angles; Observation angle

Highways; Maintenance and Preservation; Operations and Traffic Management; Safety and Human Factors; I60: Maintenance; I73: Traffic Control

TRIS, TRB, ATRI

Oct 25 2002 12:00AM

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