Drowsy driving is one of the main causes traffic accidents. To reduce such accidents, early detection drowsy needed. In previous studies, it was shown that driver drowsiness affected performance, behavioral indices, and physiological indices. The purpose this study to investigate feasibility classification alert states drivers, particularly slightly state, based on hybrid sensing vehicle-based, behavioral, indicators with consideration for implementation these identifications into a system....

Driver drowsiness is one of the most causes traffic accidents worldwide. To prevent such accidents, it necessary to detect driver as early possible. In previous studies, was confirmed that decreasing arousal levels affect physiological indices, behavioral and driving performance. The goal this study classify alert states drivers, particularly slightly drowsy state, based on measures, First, relationship between level a driver, signals, electroencephalogram electrocardiogram performance...

Thermal factors not only affect the thermal comfort sensation of occupants, but also their arousal level, productivity, and health. Therefore, it is necessary to control appropriately. In this study, we aim design a environment that improves both level occupants. To end, investigated relationships between physiological indices, subjective evaluation values, task performance under several conditions changes in indoor ambient temperature. particular, asked subjects perform mathematical related...

Indoor thermal quality affects not only a person's perception of comfort, but also their level arousal, work performance and health. Therefore, it is important that factors are controlled environment designed in accordance with its purpose. In this study, we aim to design improves both the arousal comfort occupants. order confirm possibility changes can improve investigated relationships between physiological parameters, subjective sensation, tasks. Specifically, directed participants...

Driving comfort and driving safety are essential factors for drivers. As the environment of vehicle affects sensation arousal level drivers, it is necessary to contemplate way design environmental inside vehicle. In this study, we focus on thermal vehicle, aim a which can improve both our previous research, showed that changes in indoor temperature have possibility driver by analyzing subjective parameters. To clarify requirements, needed evaluate drivers continuously, quantitatively...

This study proposes an autonomous lane-changing system for congested merging areas. Manual and vehicles are expected to coexist until all substituted by vehicles. Therefore, interactions between humans driving systems should be discussed. assumed a scenario in which vehicle performed lane change main lane, where were manual. The proposed estimated the possibility of changing lanes without collisions. A simulator was used measure operations human drivers area, method developed based on...

The design of vehicle cabin seats is crucial in transportation, as it directly affects the safety and comfort both drivers passengers. To seat parameters that enhance sitting comfort, a quantitative evaluation involving an understanding users’ physiological responses necessary. This study aimed to assess relaxation induced by changes using electroencephalography electrocardiography. We examined subjective evaluations fifteen participants, focusing on effects reclining, ottoman, slab. results...

Narrow tilting vehicles have been proposed to address transportation issues such as traffic congestion, lack of parking space. The investigation the effects narrow on user is insufficient though many methods for improving stability those were proposed. purpose present study investigate mechanism psychophysiological states driver a fundamental study. Focused satisfaction among components usability, hypotheses that affects user's psychological state, and physiological indices frontal alpha...

Truck platooning is one of the expected systems using automated driving technology based on cooperated adaptive cruise control (CACC) as a solution to problems such fuel efficiency and lack driver. To implement truck system, it necessary ensure safety acceptability system for user peripheral drivers. In this study, we aim improve human-machine interface (HMI) notice information. Focusing drivers traffic density, hypotheses that communication HMI improves trucks density affects them were...

Indoor temperature affects the arousal level and thermal comfort of drivers. In this study, we aim to prevent drowsy state improve drivers in driving for a long time using changes ambient cabin. Targeting scene 90 minutes, hypothesis that repeated stimulation driver can decrease was tested. We investigated drowsiness level, based on subjective evaluation, physiological parameters condition min with simulator. As result, scale from 0 (alert) 4 (extremely drowsy) kept below 1 (slightly...

Automated driving technology enhanced with automated mobility scooter is expected as a transport support for vulnerable elderly and disabled people. It necessary to have strategy that can improve the safety, comfort, acceptability of users social implementation scooters. In this study, we specifically focus on comfort users. The hypotheses velocity scooters density peripheral pedestrians will affect in it be quantitatively evaluated by using their physiological responses were tested....

Autonomous driving is expected to substitute human drivers and decrease the number of traffic accidents. Among various techniques for autonomous driving, ACC (adaptive cruise control) one commercialized ADAS (advanced driver-assistance systems) widely used. However, some conduct a risky lane-changing in real world. In this case, conventional system conducts an excessive deceleration avoiding crash with cut-in vehicle, it can conversely cause following vehicle. To solve problem, our research...

In recent years, the interior lighting of railway vehicles is changing to LED lighting. has dimming and toning functions, which makes it possible create an unprecedented in-vehicle environment may contribute comfort. this study, we examined possibilities various functions We also conducted multiple evaluation tests verify specifications expected effects that lead improve

Indoor thermal quality affects the conditions of occupant who is doing tasks in an indoor environment, and also task performance. Therefore, appropriate control factors important to improve occupant, such as comfort sensation arousal level which related In order determine guidelines how for improving level, it necessary evaluate condition by using quantitative continuously measurable indices physiological indices. this study, we aimed clarify relationship between affected changes factor...

In a bathing environment, it is needed to evaluate an emotional effect quantitatively and continuously at stage of the product design for improving stress-relaxation effect.This study aimed propose index which can comfort on bathing.To search physiological indices correlated comfortable feeling, we measured subjective evaluation feeling in one-minute increments, with continuous measurement parameter before bathing, after bathing.We analyzed relationship between time-series data parameter.As...

In designing a living environment, quantitative evaluation of emotion is beneficial in improving emotional effects users. this study, we thought that the "comfortableness" bathing activities can be quantitatively evaluated by capturing continuous changes physiological response along with subjective evaluation. We captured core temperature, skin and heart rate subject as response. conducted spectral analysis variability heat rate. Finally, examined evaluation's effectiveness.