Citation

Choi M, Ahn S, Seo J. Accid. Anal. Prev. 2020; 136: e105404.

Affiliation

Department of Building and Real Estate, Hong Kong Polytechnic University, 11 Yuk Choi Rd., Hung Hom, Kowloon, Hong Kong. Electronic address: joonoh.seo@polyu.edu.hk.

Copyright

(Copyright © 2020, Elsevier Publishing)

DOI

10.1016/j.aap.2019.105404

PMID

31927452

Abstract

Forklifts are among the machines involved with the highest levels of occupational fatalities. As many accidents involved with a forklift can be attributed to the low situation awareness (SA) of the operator, it is essential to understand the factors influencing a forklift operator's SA for reducing forklift accidents, especially of collision type. Against this background, this research aims to investigate how a forklift operator's SA about other people around can be influenced by the type of subtasks they are carrying out. In this research, a virtual reality (VR) environment is used as the experiment environment, in which subjects perform a series of subtasks, such as driving, turning, reversing, loading and unloading, with a VR forklift simulation model. A SAGAT-an established SA measurement technique based on a series of queries targeting Level 1, 2, and 3 SA-is used as the main method to collect data about subjects' SA in the experiment. The analysis of the data reveals that a forklift operator is likely to have a reduced SA about the workers around when he/she is performing a loading or unloading task due to attention narrowing, which occurs when a person concentrates on a cognitively demanding task. The findings provide insights into how forklift operator SA could be improved through an SA-oriented safety training program and also how sensing technologies might assist forklift operators with maintaining a good SA.

Copyright © 2019. Published by Elsevier Ltd.

Language: en

Keywords

Construction worker; Forklift; Operator; Safety; Situation awareness