A comprehension-based ergonomic redesign of Philippine road warning signs

College

Gokongwei College of Engineering

Department/Unit

Industrial Engineering

Document Type

Article

Source Title

International Journal of Industrial Ergonomics

Volume

65

First Page

17

Last Page

25

Publication Date

2018

Abstract

Safety in the road environment is dictated by the effectiveness of road warning signs in terms of comprehensibility. Due to prevalent road accidents associated with human error and confusion with road warning signs, there is a need for signs that are not well-comprehended by drivers to be investigated and further revised. This paper aims to measure the comprehension level of road warning signs in the Philippines and propose redesigned alternative road warning signs with reference to the ergonomic principles of display design. In selecting the most suitable alternative design, an analytic hierarchy process (AHP) method is employed. It is found that more than half of the assessed signs fall below the standards set by the American National Standards Institute (ANSI), thus leading to the proposal of alternative sign designs. To validate the significant improvement between the prior and new designs, a Mann-Whitney rank sum test is performed. The redesigned alternatives exhibited substantial improvement in the comprehension level of drivers. This implies that the application of ergonomic principles significantly increases driver comprehension level.

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Disciplines

Ergonomics

Keywords

Traffic signs and signals—Philippines—Design; Design—Human factors

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