title: Ergonomics solution for crossing collisions based on field assessment of visual environment at urban intersections in Japan.
abstract: This paper aims to assess quantitatively the actual visual environment of uncontrolled urban downtown intersections in Japan in relation to frequently occurring crossing collisions and to discuss the safety countermeasures for them. In Field Study 1 dealing with direct visibility, our ultra-wide-angle photograph analysis revealed that most of the right/left-ward visible range at 11 intersections were insufficient to check safety, and the quality of direct visibility was closely associated with causing crossing collisions. The countermeasures to reduce a blind area were determined to be a top priority. In Field Study 2 dealing with indirect visibility, more than half of the 25 traffic convex mirrors had marked shortcomings for preventive safety, and ergonomics guidelines ensuring indirect visibility were proposed for installing traffic convex mirrors. Low-cost/low-technology-oriented countermeasures are highly recommended to obtain clear/sufficient images of crucial information satisfying drivers' requirements on traffic convex mirrors in accordance with those ergonomics guidelines was highly recommended. Crossing collisions could be prevented by improvement of poor direct and indirect visibility.
authors: Graduate School of Medical Sciences, Nagoya City University, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan. mori@kanagawa-u.ac.jp
authors: Midori
authors: M
authors: Mori
authors: Sadao
authors: S
authors: Horino
authors: Sou
authors: S
authors: Kitajima
authors: Masaru
authors: M
authors: Ueyama
authors: Takeshi
authors: T
authors: Ebara
authors: Toru
authors: T
authors: Itani
mesh_terms: D000063:Accidents, Traffic / Q000517:prevention & control*; D001334:Automobile Driving; D006804:Ergonomics; D005133:Eye Movements; D006801:Humans; D007564:Japan; D007909:Lenses; D010781:Photography; D017751:Safety Management; D014504:Urban Health; D014796:Visual Perception