BE SAFE
WITH APS
BE VISIBLE
Which is more effective during the nighttime: garments with combined-performance material or retroreflective material?
According to a 1999 human factors study1, silver products which reflect white are equally conspicuous to the human eye at various distances when compared with colored reflective products such as orange, red or green. The quantity of retroreflective trim, brightness and placement are the important factors to achieve enhanced visibility.
According to the UMTRI 2000-35 study2, in low-light and nighttime conditions color contrast was not an identifiable attribute, as all retroreflective materials used appeared white when illuminated. Again, a visibility demonstration is the best tool to determine effectiveness of retroreflective materials in low-light conditions and at night.
Online Safety Facts & Updates
R0101
1 The Nighttime Conspicuity of Pedestrians in Urban Environments, Gunnar D. Jenssen, Terje Moen and Bjorn Brekke; SINTEF Civil and Environment Engineering, Transportation and Energy Research; N-7465 Trondheim, Norway: presented at Vision in Vehicles 8, August 22-25, 1999, Boston, MA.
2 University of Michigan Transportation Research Institute (UMTRI 2000-35) “The Effect of Color Contrast On Daytime and Nighttime Conspicuity of Roadworkers Vests.”
Source: 3M ANSI/ISEA107-2004MADEEASY: A QuickReferencetoHigh-VisibilitySafetyApparel
Share it :
