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Title:

Effect of Guide-Light Delineation System on Driver Mental Workload and Driving Performance

Accession Number:

01550553

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

A guide-light delineation system that works by shining LED light on the road has been under development since 2012 in Japan to overcome the problem of road markings being obscured by snow cover in the winter. This study investigates how the guide-light delineation system affects driver subjective mental workload (SMWL) and driving performance under snowy road conditions at night. The experiment was conducted on a driving simulator. Twenty-five participants in their 20’s to 60’s participated. The participants were exposed to five delineation conditions as the main independent variables: (1) no delineation, (2) delineation by illuminated delineators at the shoulder, (3) 30-m-interval guide-light delineation, (4) 15-m-interval guide-light delineation, and (5) continuous guide-light delineation. The participants drove in the simulator on a 3-km section of a snow-covered, four-lane expressway for each run. The authors measured subjective mental workload (SMWL), steering operation, and variation in driving speed. The guide-light delineation system was found to have an extremely positive effect on driver mental workload and comfortable visibility conditions compared to conventional illuminated delineators under the condition of snow cover at night.

Supplemental Notes:

This paper was sponsored by TRB committee AND40 Visibility.

Monograph Accession #:

01550057

Report/Paper Numbers:

15-2719

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Hagiwara, Toru
Kawamura, Akira
Tomiyama, Kazuya
Sueoka, Masami
Kataoka, Mitsuhide
Takagi, Issei

Pagination:

15p

Publication Date:

2015

Conference:

Transportation Research Board 94th Annual Meeting

Location: Washington DC, United States
Date: 2015-1-11 to 2015-1-15
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; Photos; References (5) ; Tables

Geographic Terms:

Japan

Subject Areas:

Highways; Safety and Human Factors; I62: Winter Maintenance; I83: Accidents and the Human Factor; I85: Safety Devices used in Transport Infrastructure

Source Data:

Transportation Research Board Annual Meeting 2015 Paper #15-2719

Files:

TRIS, TRB, ATRI

Created Date:

Dec 30 2014 12:56PM