scholarly journals Preliminary investigation of sleep-related driving fatigue experiment in Indonesia

2018 ◽  
Vol 9 (1) ◽  
pp. 8
Author(s):  
Kadek Heri Sanjaya ◽  
Yukhi Mustaqim Kusuma Sya'Bana ◽  
Shaun Hutchinson ◽  
Cyriel Diels
Keyword(s):  
Reaction Time ◽  
Driving Simulator ◽  
Preliminary Investigation ◽  
Driving Performance ◽  
Illumination Intensity ◽  
Lane Change ◽  
Test Reaction ◽  
Physiological Measurement ◽  
Driving Fatigue ◽  
Lane Change Test

Sleep-related driving fatigue has been recognised as one main cause of traffic accidents. In Indonesia, experiment-based driving fatigue study is still very limited, therefore it is necessary to develop laboratory-based experiment procedure for sleep-related fatigue study. In this preliminary study, we performed a literature review to find references for the procedure and three pilot experiments to test the instruments and procedure to be used in measuring driving fatigue. Three subjects participated, both from experienced and inexperienced drivers. Our pilot experiments were performed on a driving simulator using OpenDS software with brake and lane change test reaction time measurement. We measured sleepiness by using Karolinska Sleepiness Scale (KSS) Questionnaire. The conditions of the experiment were based on illumination intensity as well as pre- and post-lunch session. We found that lane change reaction time is more potential than brake reaction time to measure driving performance as shown by the more fluctuating data. Post-lunch seems to induce drowsiness greater than illumination intensity. KSS questionnaire seems non-linear with driving performance data. We need to test further these speculations in the future studies involving a sufficient number of subjects. We also need to compare the effect of circadian rhythm and sleep deprivation on driving fatigue. The use of eye closure and physiological measurement in further study will enable us to measure driving fatigue more objectively. Considering the limitations, more preliminary experiments are required to be performed before conducting the main experiment of driving fatigue.

Investigating the Effects of Visuospatial Memory Secondary Tasks on LCT Driving Performance

2017 ◽  
Vol 31 (10) ◽  
pp. 1759020 ◽  
Author(s):  
Ling Wu ◽  
Yueqi Hu ◽  
Tong Zhu ◽  
Haoxue Liu
Keyword(s):  
Working Memory ◽  
Memory Task ◽  
Driving Performance ◽  
Visuospatial Memory ◽  
Lane Change ◽  
Secondary Tasks ◽  
Perceived Workload ◽  
Memory Group ◽  
Lane Change Test ◽  
Lane Keeping

Memory demand is associated with increased mental workload. The objective of the present study was to examine the effects of visuospatial memory secondary tasks on driving performance. Memory tasks for the unknown word-figure pairs and recognition tasks for word-figure pairs at two-level difficulties were employed separately to represent working memory’s process and long-term memory’s process. A simulator study was conducted based on the simulation of the standard environment of Lane change test (LCT). The performance of lane keeping, lane change, and secondary tasks was measured by statistical methods. The comprehensive appraisal model was constructed to quantify total driving performance. The results showed that the mean path deviation, steering angle, and lane excursion times increased, and the proportion of correct lane change decreased, with the perceived workload increasing and the total driving performance decreasing in dual-task driving condition. Compared with the simple working memory group, as the difficulty of tasks increased in difficult working memory group, lane change performance degraded and the perceived workload increased. In contrast to difficult working memory group, the performance of lane keeping and lane change increased, while the perceived workload decreased and the total performance increased by about 50% in difficult recognition group. There were few differences between the simple working memory group and simple recognition group. The difficult working memory group had the lowest total driving performance. The results indicate that as the secondary task’s difficulty increases, driving performance will degrade. Performance improves significantly when the working memory process is converted to the recognition process. This trend is more obvious when the memory task assumes to be more difficult.

scholarly journals Effect of Smoked Cannabis on Vigilance and Accident Risk Using Simulated Driving in Occasional and Chronic Users and the Pharmacokinetic–Pharmacodynamic Relationship

2019 ◽  
Vol 65 (5) ◽  
pp. 684-693 ◽  
Author(s):  
Sarah Hartley ◽  
Nicolas Simon ◽  
Amine Larabi ◽  
Isabelle Vaugier ◽  
Frédéric Barbot ◽  
...  
Keyword(s):  
Reaction Time ◽  
Whole Blood ◽  
Driving Simulator ◽  
Driving Performance ◽  
Accident Risk ◽  
Maximal Effect ◽  
Pharmacodynamic Analysis ◽  
Before And After ◽  
Duration Effect ◽  
Psychomotor Vigilance

Abstract BACKGROUND The pharmacokinetic–pharmacodynamic relationship between whole blood δ-9-tetrahydrocannabinol (THC) and driving risk is poorly understood. METHODS Fifteen chronic cannabis consumers (1–2 joints/day; CC) and 15 occasional cannabis consumers (1–2 joints/week; OC) of 18 to 34 years of age were included. A pharmacokinetic study was conducted with 12 blood samplings over a 24-h period before and after controlled random inhalation of placebo or 10 mg or 30 mg of THC. THC and metabolites were quantified using LC-MS/MS. Effects on reaction time by psychomotor vigilance tests and driving performance through a York driving simulator were evaluated 7 times. A pharmacokinetic–pharmacodynamic analysis was performed using R software. RESULTS Whole blood peak THC was 2 times higher in CC than in OC for a same dose and occurred 5 min after the end of consumption. THC remained detectable only in CC after 24 h. Despite standardized consumption, CC consumed more available THC from each cigarette regardless of dose. Maximal effect for reaction time was dose- and group-dependent and only group-dependent for driving performance, both being decreased and more marked in OC than in CC. These effects were maximal around 5 h after administration, and the duration was longer in OC than in CC. A significant pharmacokinetic–pharmacodynamic relationship was observed only between Tmax for blood THC and the duration effect on mean reciprocal reaction time. CONCLUSIONS Inhalation from cannabis joints leads to a rapid increase in blood THC with a delayed decrease in vigilance and driving performance, more pronounced and lasting longer in OC than in CC. ClinicalTrials.gov Identifier: NCT02061020

Consistency and sensitivity of lane change test according to driving simulator characteristics

2008 ◽  
Vol 2 (4) ◽  
pp. 306 ◽  
Author(s):  
M.-P. Bruyas ◽  
C. Brusque ◽  
H. Tattegrain ◽  
A. Auriault ◽  
I. Aillerie ◽  
...  
Keyword(s):  
Driving Simulator ◽  
Lane Change ◽  
Lane Change Test

scholarly journals Preventing the risks of monotony related fatigue while driving through gamification

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Lukas Bier ◽  
Michael Emele ◽  
Kaja Gut ◽  
Jasna Kulenovic ◽  
David Rzany ◽  
...  
Keyword(s):  
Driving Simulator ◽  
Driving Performance ◽  
Physiological Parameters ◽  
Fatal Accidents ◽  
Interaction System ◽  
Driving Fatigue ◽  
Simulator Study

Abstract Background Driving fatigue can have serious consequences. Too often fatal accidents are caused by fatigue. However, it is not uncommon for fatigue to occur while driving when the driver is under-challenged. Due to the increasing automation of vehicles, it is foreseeable that the number of accidents caused by monotony will increase. Interactions between driver and vehicle through gamification can remedy the situation and provide the driver with new stimuli during an otherwise monotonous journey. Methods In order to test the effectiveness of such interactions, we conducted a driving simulator study with 31 test persons to investigate driving performance and psycho-physiological parameters. Each subject ran through the experiment three times in randomized order to test the interaction system in comparison to a ride in which the driver was alone and a ride in which the driver had a co-driver. Results The results provide clear indications of safer driving of the test subjects when driving with gamification and with a passenger. The tested interaction system prevents upcoming fatigue in a similar way to communication with a passenger. The experiments also provide insights into the effects of monotony in vehicle driving.

Effects of Individual Differences, Attention, and Memory Deficits on Driver Distraction

2020 ◽  
Vol 64 (1) ◽  
pp. 1196-1201
Author(s):  
Alejandro A. Arca ◽  
Kaitlin M. Stanford ◽  
Mustapha Mouloua
Keyword(s):  
Individual Differences ◽  
Driving Simulator ◽  
Memory Deficits ◽  
Driving Performance ◽  
Driver Distraction ◽  
Phone Call ◽  
Traffic Density ◽  
Attention And Memory ◽  
Adhd Diagnosis ◽  
Simulated Driving

The current study was designed to empirically examine the effects of individual differences in attention and memory deficits on driver distraction. Forty-eight participants consisting of 37 non-ADHD and 11 ADHD drivers were tested in a medium fidelity GE-ISIM driving simulator. All participants took part in a series of simulated driving scenarios involving both high and low traffic conditions in conjunction with completing a 20-Questions task either by text- message or phone-call. Measures of UFOV, simulated driving, heart rate variability, and subjective (NASA TLX) workload performance were recorded for each of the experimental tasks. It was hypothesized that ADHD diagnosis, type of cellular distraction, and traffic density would affect driving performance as measured by driving performance, workload assessment, and physiological measures. Preliminary results indicated that ADHD diagnosis, type of cellular distraction, and traffic density affected the performance of the secondary task. These results provide further evidence for the deleterious effects of cellphone use on driver distraction, especially for drivers who are diagnosed with attention-deficit and memory capacity deficits. Theoretical and practical implications are discussed, and directions for future research are also presented.

scholarly journals Driving Performance and Its Correlation with Neuropsychological Tests in Senior Drivers with Cognitive Impairment in Japan

2021 ◽  
Vol 79 (4) ◽  
pp. 1575-1587
Author(s):  
Zhouyuan Peng ◽  
Hiroyuki Nishimoto ◽  
Ayae Kinoshita
Keyword(s):  
Cognitive Impairment ◽  
Cognitive Functions ◽  
Neuropsychological Tests ◽  
Driving Simulator ◽  
Driving Performance ◽  
Impaired Driving ◽  
Dementia Patients ◽  
Neuropsychological Factors ◽  
Senior Drivers

Background: With the rapid aging of the population, the issue of driving by dementia patients has been causing increasing concern worldwide. Objective: To investigate the driving difficulties faced by senior drivers with cognitive impairment and identify the specific neuropsychological tests that can reflect specific domains of driving maneuvers. Methods: Senior drivers with cognitive impairment were investigated. Neuropsychological tests and a questionnaire on demographic and driving characteristics were administered. Driving simulator tests were used to quantify participants’ driving errors in various domains of driving. Results: Of the 47 participants, 23 current drivers, though they had better cognitive functions than 24 retired drivers, were found to have impaired driving performance in the domains of Reaction, Starting and stopping, Signaling, and Overall (wayfinding and accidents). The parameters of Reaction were significantly related to the diagnosis, and the scores of MMSE, TMT-A, and TMT-B. As regards details of the driving errors, “Sudden braking” was associated with the scores of MMSE (ρ= –0.707, p < 0.01), BDT (ρ= –0.560, p < 0.05), and ADAS (ρ= 0.758, p < 0.01), “Forgetting to use turn signals” with the TMT-B score (ρ= 0.608, p < 0.05), “Centerline crossings” with the scores of MMSE (ρ= –0.582, p < 0.05) and ADAS (ρ= 0.538, p < 0.05), and “Going the wrong way” was correlated with the score of CDT (ρ= –0.624, p < 0.01). Conclusion: Different neuropsychological factors serve as predictors of different specific driving maneuvers segmented from driving performance.

Safety Impact of Weaving Distance on Freeway Facilities with Managed Lanes using Both Microscopic Traffic and Driving Simulations

2018 ◽  
Vol 2672 (39) ◽  
pp. 130-141 ◽  
Author(s):  
Qing Cai ◽  
Moatz Saad ◽  
Mohamed Abdel-Aty ◽  
Jinghui Yuan ◽  
Jaeyoung Lee
Keyword(s):  
Traffic Safety ◽  
Traffic Congestion ◽  
Driving Simulator ◽  
Negative Impact ◽  
Control Strategies ◽  
General Purpose ◽  
Valuable Insight ◽  
Lane Change ◽  
Simulation Studies ◽  
Managed Lanes

With the challenges of increasing traffic congestion, the concept of managed lanes (MLs) has been gaining popularity recently as a means to effectively improve traffic mobility. MLs are usually designed to be left-lane concurrent with an at-grade access/exit. Such a design forms weaving segments since it requires vehicles to change multiple general purpose lanes (GPLs) to enter or exit the ML. The weaving segments could have a negative impact on traffic safety in the GPLs. This study provides a comprehensive investigation of the safety impact of different lengths for each lane change maneuver on GPL weaving segments close to the ingress and egress of MLs through two simulation approaches: VISSIM microsimulation and driving simulator. The two simulation studies are developed based on traffic data collected from freeway I-95 in Miami, Florida. The results from the two simulation studies support each other. Based on the two simulation studies, it is recommended that 1,000 feet be used as the optimal length for per lane change at the GPLs weaving segments with MLs. The safety impact of traffic volume, variable speed limit control strategies, and drivers’ gender and age characteristics are also explored. This study can provide valuable insight for evaluating the traffic performance of freeway weaving segments with the presence of concurrent GPLs and MLs in a highway safety context. It also provides guidelines for future conversion of freeways to include MLs.

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