Evaluation of bicyclist physiological response and visual attention in commercial vehicle loading zones.

Autor: Jashami H; School of Civil and Construction Engineering, Oregon State University, 101 Kearney Hall, 1491 SW Campus Way, Corvallis, OR 97331, United States. Electronic address: hisham.jashami@oregonstate.edu., Cobb D; Burgess and Niple, Inc, United States. Electronic address: doug.cobb@burgessniple.com., Sinkus I; School of Civil and Construction Engineering, Oregon State University, 101 Kearney Hall, 1491 SW Campus Way, Corvallis, OR 97331, United States. Electronic address: sinkusi@oregonstate.edu., Liu Y; HDR, 1050 SW 6th Ave. Ste. 1800, Portland, OR 97204-1134, United States. Electronic address: yujun.liu@hdrinc.com., McCormack E; Department of Civil and Environmental Engineering, University of Washington, 201 More Hall, Seattle, WA 98195, United States. Electronic address: edm@uw.edu., Goodchild A; Department of Civil and Environmental Engineering, University of Washington, 201 More Hall, Seattle, WA 98195, United States. Electronic address: annegood@uw.edu., Hurwitz D; School of Civil and Construction Engineering, Oregon State University, 101 Kearney Hall, 1491 SW Campus Way, Corvallis, OR 97331, United States. Electronic address: david.hurwitz@oregonstate.edu.
Jazyk: angličtina
Zdroj: Journal of safety research [J Safety Res] 2024 Feb; Vol. 88, pp. 313-325. Date of Electronic Publication: 2023 Dec 16.
DOI: 10.1016/j.jsr.2023.11.018
Abstrakt: Introduction: With growing freight operations throughout the world, there is a push for transportation systems to accommodate trucks during loading and unloading operations. Currently, many urban locations do not provide loading and unloading zones, which results in trucks parking in places that obstruct bicyclist's roadway infrastructure (e.g., bicycle lanes).
Method: To understand the implications of these truck operations, a bicycle simulation experiment was designed to evaluate the impact of commercial vehicle loading and unloading activities on safe and efficient bicycle operations in a shared urban roadway environment. A fully counterbalanced, partially randomized, factorial design was chosen to explore three independent variables: commercial vehicle loading zone (CVLZ) sizes with three levels (i.e., no CVLZ, Min CVLZ, and Max CVLZ), courier position with three levels (i.e., no courier, behind the truck, beside the truck), and with and without loading accessories. Bicyclist's physiological response and eye tracking were used as performance measures. Data were obtained from 48 participants, resulting in 864 observations in 18 experimental scenarios using linear mixed-effects models (LMM).
Results: Results from the LMMs suggest that loading zone size and courier position had the greatest effect on bicyclist's physiological responses. Bicyclists had approximately two peaks-per-minute higher when riding in the condition that included no CVLZ and courier on the side compared to the base conditions (i.e., Max CVLZ and no courier). Additionally, when the courier was beside the truck, bicyclist's eye fixation durations (sec) were one (s) greater than when the courier was located behind the truck, indicating that bicyclists were more alert as they passed by the courier. The presence of accessories had the lowest influence on both bicyclists' physiological response and eye tracking measures.
Practical Applications: These findings could support better roadway and CVLZ design guidelines, which will allow our urban street system to operate more efficiently, safely, and reliable for all users.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 National Safety Council and Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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