Analysis of Factors Related to Drivers Braking Timing for Driving Assistant System

Morita, Kazumoto; Sekine, Michiaki; Okada, Takeo

doi:10.9746/ve.sicetr1965.44.199

Cited by 3 publications

(4 citation statements)

References 3 publications

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“…In the results of a similar analysis we conducted on brake operation when following a lead vehicle, the error rate could be made 9.5% (5) by adopting the single factor of inverse TTC. The error rate in the present study was 28.7% even when two variables were selected for the vehicle approaching from the side direction.…”

mentioning

confidence: 81%

“…Assuming that at 2.0 sec before pressing the brake pedal, the participant has made the decision to not yet press the brake pedal, and that at 0.5 seconds before he or she has made the decision to press the brake pedal, we analyze the factors that are related to distinguishing between the decisions of the participants at 2.0 and 0.5 sec before pressing the pedal. This is the same method we used to analyze brake operation when trailing a lead vehicle (4,5) . Here, since it takes about 0.3 sec to move the foot from the accelerator to the brake pedal (10) , and time is also required from making the decision to actually moving the foot, we considered that the judgment to start braking is made about 0.5 seconds before the brake pedal is pressed.…”

Section: Start Of Braking Operationmentioning

confidence: 99%

“…The inverse TTC is known to be equivalent to the increase rate of the visual angle to the lead vehicle (4,5) . The relationship between brake pedal force and the increase rate of the visual angle of the target vehicle as the vehicle approaches from the side direction is shown in Fig.…”

Section: (9)mentioning

confidence: 99%

“…Factors including the time-to-collision (TTC) with a lead vehicle and its inverse (1,2,3,4,5,6) , KdB (7) based on the amount of area change on the retina, and Risk Perception (8) including the inverse of the time headway and inverse of TTC have been proposed as factors related to braking. In addition, there is a proposal of Stop Distance Algorithm (9) , which defines a warning distance, based on the difference between the stopping distances of the leading and following vehicles.…”

Section: Introductionmentioning

confidence: 99%

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Factors Related to Drivers' Braking Operation in Response to a Crossing Vehicle Approaching from the Side Direction

Morita

Tanaka

Sekine

et al. 2009

JMTL

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We conducted driving simulator experiments with 15 participants to identify factors related to drivers' judgment of when and how to brake. We set up a situation in which a subject vehicle encountered a target vehicle at an open non-signalized intersection to simulate a crossing collision. Drivers in the subject vehicle were instructed to apply the brakes when they felt danger. Factors investigated were azimuth angle to the target vehicle, position of target vehicle when the subject vehicle arrives at an intersection, visual angle of target vehicle, and relative distance between subject vehicle and target vehicle. We analyzed both their time differentials and increase rates. Statistical analysis indicated that the factors most closely related to the drivers' braking judgment are relative distance between subject vehicle and target vehicle, and azimuth angle to the target vehicle.

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mentioning

confidence: 81%

Section: Start Of Braking Operationmentioning

confidence: 99%

Section: (9)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Factors Related to Drivers' Braking Operation in Response to a Crossing Vehicle Approaching from the Side Direction

Morita

Tanaka

Sekine

et al. 2009

JMTL

Self Cite

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Index of braking behaviour in two dimensions within risk perception

Matsubayashi,

Miwa,

Terai

et al. 2024

Transportation Research Part F: Traffic Psychology and Behaviou

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自動運転に対して乗員の抱く不安感と乗員の運転特性の関連性

NANBU,

MASUTA,

FUSE

et al. 2023

J. SOFT

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In the development of the fully automated vehicle, the vehicle has to be controlled to reduce the fear of autonomous driving for passengers. However, the driving situation when passengers feel a sense of fear and strangeness is not clearly explained while the vehicle runs autonomously without manual operation. Therefore, we investigate the driving situation when passengers feel a sense of fear and strangeness based on the timing and magnitude of the intervention operation by using a VR simulator that replicates fully automated driving. In this paper, experiments that the automated vehicle avoids dangerous situations are conducted. A subject can operate intervention when he/she feels fear or strangeness. We analyze the relationship between the intervention operation and manual driving operation. According to the experimental results, we discuss the operating characteristics of each person and the features of the fear of an automated driving.

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Analysis of Factors Related to Drivers Braking Timing for Driving Assistant System

Cited by 3 publications

References 3 publications

Factors Related to Drivers' Braking Operation in Response to a Crossing Vehicle Approaching from the Side Direction

Factors Related to Drivers' Braking Operation in Response to a Crossing Vehicle Approaching from the Side Direction

Index of braking behaviour in two dimensions within risk perception

自動運転に対して乗員の抱く不安感と乗員の運転特性の関連性

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