Truck Platooning Under Real Traffic Conditions: First Insights on Behavioral Adaptations and Gap Preference of Professional Drivers

Truck Platooning Under Real Traffic Conditions: First Insights on Behavioral Adaptations and Gap Preference of Professional Drivers

Objective The aim of the study was to investigate (1) how different gap sizes are perceived by professional truck drivers under real traffic conditions and (2) whether semi-automated platoon driving leads to changes in driving behavior of subsequent manual driving. Background Platoon driving is a cu...

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Bibliographic Details
Published in:Human factors Vol. 63; no. 6; pp. 1033 - 1045
Main Authors: Castritius, Sarah-Maria, Dietz, Christoph Johannes, Schubert, Patric, Moeller, Johanna, Morvilius, Simone, Hammer, Sabine, Tran, Chung Anh, Haas, Christian T.
Format: Journal Article
Language:English
Published: Los Angeles, CA SAGE Publications 01-09-2021
Human Factors and Ergonomics Society
Subjects:
Accidents, Traffic
Adaptation
Automation
Automobile Driving
Driving
Driving conditions
Humans
Motor Vehicles
Platooning
Qualitative analysis
Surveys and Questionnaires
Traffic
Traffic flow
Trucks
Vehicles
commercial truck driver
truck platoon driving
vehicle automation
driver behavior
on-road study
human–automation interaction
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Summary:Objective The aim of the study was to investigate (1) how different gap sizes are perceived by professional truck drivers under real traffic conditions and (2) whether semi-automated platoon driving leads to changes in driving behavior of subsequent manual driving. Background Platoon driving is a current branch in the development of automated driving in which two or more vehicles build a convoy. The lead vehicle is controlled manually while following vehicles are electronically coupled to it and drive semi-automated with small gaps in order to achieve a better traffic flow and potential fuel savings. Method In a real road experiment, 10 trained professional truck drivers completed a total of 33 test drives with a two-truck platoon on the German highway A9 with a gap size of either 15 or 21 m, in the leading and the following vehicle. Results (1) The drivers experienced both gap sizes as comfortable and preferred the smaller gap size of 15 m. (2) Both gap sizes led to significantly higher standard deviation of lane position in post- compared to pre-platoon driving. No significant difference in distance keepings in post- compared to pre-platoon driving occurred. Qualitative data give hints on difficulties, when switching back to regular truck driving. Conclusion The results implicate that small gap sizes are perceived as comfortable by drivers and that platoon driving has an influence on subsequent manual driving. Application Countermeasures to behavioral adaptations should be considered in order to ensure a safe conduction of platoon driving.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0018-7208
1547-8181
DOI:10.1177/0018720820908481