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Jaber, L. och Thalya, P. (2016) Driver Interaction with Pedestrians at Intersections - Quantifying the influence of environmental factors on driver comfort boundaries. Göteborg : Chalmers University of Technology (Diploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden, nr: 2016:52).
BibTeX
@mastersthesis{
Jaber2016,
author={Jaber, Leila and Thalya, Prateek},
title={Driver Interaction with Pedestrians at Intersections - Quantifying the influence of environmental factors on driver comfort boundaries},
abstract={Active safety systems are constantly being enhanced, featuring more and more environmental
factors and advanced algorithms. The system needs to be able to evaluate
many different driving situations, and take appropriate action, at a safety critical
moment. In this study, focus has been on quantifying factors’ influence on driver
comfort boundaries when interacting with pedestrians at intersections.
Seven factors, on two levels, were included in the study; Car speed, Pedestrian speed,
Pedestrian size, Crossing angle, Crossing presence, Crossing entry and Lane width.
The experiment was designed with a fractional factorial layout with the seven factors
combined into 32 tasks. Additional 4 tasks were created, 3 to compare the
study against two studies previously conducted, and another to analyze the learning/
adaptation effect.
Participants were divided into two groups; Group 1, frequent drivers and Group
2, occasional drivers. Statistical analysis based on Linear mixed-effects models was
carried out with a significance level of 0.01 for both group of drivers separately, and
by combining the two groups. Factors Car speed and Crossing entry have a significant
influence on Time To Collision (TTC) at brake onset for all group of drivers.
The factors decreased TTC when changed from low to high level. Factors Pedestrian
size and Lane width also had a significant influence on TTC at brake onset for
all group of drivers. The factors increased TTC when changed from low to high level.
The study was conducted with a low-fidelity simulator available at SAFER. Limitations
of the simulator included participants’ lack of input from auditory and sensory
sources and narrow field of view. Also, the expectancy of the pedestrian might have
changed the comfort boundaries as there was only one pedestrian crossing the road
in every scenario.
However, even though the simulator was developed with open source software, still
nearly 90% of the participants stated they experienced the environment to be natural
or sort of natural and more than 95% said they behaved, or sort of behaved, as
normally as they would have in a real traffic situation.},
publisher={Institutionen för tillämpad mekanik, Fordonssäkerhet, Chalmers tekniska högskola},
place={Göteborg},
year={2016},
series={Diploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden, no: 2016:52},
keywords={environmental factors, driver behaviour, pedestrian-crossing, intersection, comfort boundaries, driving simulator, brake onset, hypothesis testing},
}
RefWorks
RT Generic
SR Electronic
ID 237967
A1 Jaber, Leila
A1 Thalya, Prateek
T1 Driver Interaction with Pedestrians at Intersections - Quantifying the influence of environmental factors on driver comfort boundaries
YR 2016
AB Active safety systems are constantly being enhanced, featuring more and more environmental
factors and advanced algorithms. The system needs to be able to evaluate
many different driving situations, and take appropriate action, at a safety critical
moment. In this study, focus has been on quantifying factors’ influence on driver
comfort boundaries when interacting with pedestrians at intersections.
Seven factors, on two levels, were included in the study; Car speed, Pedestrian speed,
Pedestrian size, Crossing angle, Crossing presence, Crossing entry and Lane width.
The experiment was designed with a fractional factorial layout with the seven factors
combined into 32 tasks. Additional 4 tasks were created, 3 to compare the
study against two studies previously conducted, and another to analyze the learning/
adaptation effect.
Participants were divided into two groups; Group 1, frequent drivers and Group
2, occasional drivers. Statistical analysis based on Linear mixed-effects models was
carried out with a significance level of 0.01 for both group of drivers separately, and
by combining the two groups. Factors Car speed and Crossing entry have a significant
influence on Time To Collision (TTC) at brake onset for all group of drivers.
The factors decreased TTC when changed from low to high level. Factors Pedestrian
size and Lane width also had a significant influence on TTC at brake onset for
all group of drivers. The factors increased TTC when changed from low to high level.
The study was conducted with a low-fidelity simulator available at SAFER. Limitations
of the simulator included participants’ lack of input from auditory and sensory
sources and narrow field of view. Also, the expectancy of the pedestrian might have
changed the comfort boundaries as there was only one pedestrian crossing the road
in every scenario.
However, even though the simulator was developed with open source software, still
nearly 90% of the participants stated they experienced the environment to be natural
or sort of natural and more than 95% said they behaved, or sort of behaved, as
normally as they would have in a real traffic situation.
PB Institutionen för tillämpad mekanik, Fordonssäkerhet, Chalmers tekniska högskola,PB Institutionen för tillämpad mekanik, Fordonssäkerhet, Chalmers tekniska högskola,
T3 Diploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden, no: 2016:52
LA eng
LK http://publications.lib.chalmers.se/records/fulltext/237967/237967.pdf
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