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Showing 4 results for Driving
The survey of relationship between bus drivers’ situation awareness, driving performance and cognitive abilities using driving simulator
Mojtaba Abbaszadeh, Seyyed Abolfazl Zakerian, Ali Nahvi, Jebrael Nasl Seraji,
Volume 2, Issue 3 (12-2014)
Abstract
 

Introduction: One of the most important subjects in the analysis of driver’s behavior had been situation awareness during the past decade. However, no study has been investigated the relation among component of situation awareness and performance and cognitive abilities of bus drivers. Current study aimed to survey relationship between bus drivers’ situation awareness, driving performance and cognitive abilities using driving simulator.

Material and Methods: In this study, 30 professional bus drivers who have diploma or higher degree participated. Situation awareness measured by SAGAT technique and tests UFOV, EFT and WMS were used for measuring of cognitive abilities. Brake reaction time and lane departures were criteria for driving performance.

Results: Accordingly, the result showed significant relation between drivers’ situation awareness before and after hazard conditions. Among WMS, divided attention, selective attention and EFT with level 1 of situation awareness was seen significant relation. The result of current study released a significant correlation among WMS and divided attention with lane departure.

Conclusion: Results showed, in general, the driver's situational awareness in dangerous conditions increases. The study showed that cognitive ability affects only level 1 of situational awareness. According to role of situational awareness in driving performance, the results of lane keeping showed that perception might be a key factor in driving performance.

        
The Effects of Divided Attention and Cognitive Distraction on Driver’s Performance Among People Aged over 65
Mahdi Ebnali Heidari, Kamal Azam, Ahmadreza Nazeri, Majid Ebnali Heidari, Alireza Shateri,
Volume 4, Issue 4 (3-2017)
Abstract

Introduction: Driving is a complex task engaging high level of cognitive and motor processes. Adding to this complexity, engagement in cognitive secondary tasks such as talking with other passengers, speaking on the cell phone or listening to radio may effect driving performance. In addition, age-related cognitive limitations may adversely challenge driving performance. As the number of elderly drivers is rising, it is important to pay more attention to this matter.

Methods: The effects of cognitive secondary tasks on driving performance were explored through two on-road experiments (with and without listening to a recorded dialogue). In this study thirty-two individuals (male, M = 72.6, SD = 5.43) voluntarily took part in the experiments. The mean driving speed, duration of driving in unsafe-zones, numbers of overtaking, and deviation of lateral lane position were recorded, adopting a radar system and video camera. After determination of the normality of data, paired t test and correlation analysis were conducted.

Results: Mean driving speed (P < 0.05), duration of driving in an unsafe zone (P < 0.05), and numbers of overtaking (P < 0.001) showed considerable reduction of participants’ engagement in listening to the recorded dialogue. In contrast, mean deviation of lateral lane position increased.

Conclusions: The findings revealed that driving performance of elderly drivers was effected when listening to a recorded dialogue. However, in order to increase driving safety, they adopted some compensating strategies.


Determining the Mental Workload and Investigating Its Effect on Changing the Mood Components of Taxi Drivers in the City of Qazvin
Hanieh Abdi, Seyed Abolfazl Zakerian, Kamal Azam, Payam Khanlari Baniyarani,
Volume 11, Issue 4 (1-2024)
Abstract
Objectives: Road accidents and related damages and casualties are among the most important concerns of today's societies. Mental workload is one of the main human factors that can cause other factors, such as stress and anger. The present study was conducted to investigate the mental workload and its effect on changing the components of drivers' moods.
Methods: A total of 88 tour taxi drivers from Qazvin City participated in this study to examine the desired components. The driving Activity Load Index was used to evaluate mental load and the Profile of Mood States questionnaire to measure drivers' mood components. Based on the designed scenario of driving on high-traffic roads, the desired variables were evaluated. To check the relationship between these variables, paired t-tests and Pearson correlation analysis were used in SPSS version 24 software.
Results: The mean scores of the drivers' work history and age were obtained at 46.60±10.12 and 13.47±9.39 years, respectively. The obtained findings showed that driving on high-traffic roads significantly increased the average mental workload of drivers (P<0.001). Growth in the drivers' mental workload led to a decrease in some mood components that had a positive effect, such as happiness (r=-0.143, P=0.157) and vitality (r=-0.646, P=0.050), while it resulted in a rise in the mood component of depression (r=0.020, P= 0.248).
Conclusion: Based on the findings of the study, it can be concluded that as driving continues, drivers experience a rise in mental workload. However, there was no correlation regarding the effect of this component on the mood components.

Investigating the effective factors in the positioning of the vehicle’s multimedia with the approach of mitigating the reflection while nighttime driving
Milad Karimi, Mahdi Ganji, Behnoush Bahari,
Volume 12, Issue 4 (2-2025)
Abstract

Introduction: Nowadays, using digital displays in vehicles has become very common. Therefore, the reflection display screen issue as a virtual image on the vehicle's side windows at night is a controversial item in ergonomics position of designed display. Given the high importance of visual tasks, it is necessary to take ergonomics considerations into account during vehicle design process to achieve an optimal display position.
 

Methods: In current study, by identifying the factors affecting the placement of the central display inside the vehicle, and assigning level values for them, using the design of experiment statistical method with the full factorial way, the 243 runs were obtained from the combination of the identified factors using MINITAB version 18 software, and by implementing all the extracted runs, the amount of reflection from the central display on the side windows was subjected to statistical analysis of variance (ANOVA).
 

Results: significantly effective factors (including their interaction) on the response of the reflection of the virtual image on the critical vision zone and the total reflection on the driver's right and left side windows were identified, and the amount/direction of the factors' effect on the responses were analyzed by providing a linear regression model.
 

Conclusion: During the interior design process of the vehicle and when display packaging, the factors identified in this study can be used as a control tool to reduce or eliminate the concern of the amount of display reflection on the side windows in order to prevent driver's ergonomics problems while nighttime driving.


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