scholarly journals Evaluation of Lateral Driving Safety for Elderly Drivers in High-Speed Curve Driving Conditions

2021 ◽  
Vol 39 (3) ◽  
pp. 280-298
Author(s):  
Aram JUNG ◽  
Jiyong JANG ◽  
Hyunjin PARK ◽  
Cheol OH
Keyword(s):  
High Speed ◽  
Driving Safety ◽  
Elderly Drivers ◽  
Driving Conditions

Suspension Optimum Design Considering Tire and Vehicle Matching

2014 ◽  
Vol 496-500 ◽  
pp. 617-620
Author(s):  
Fan Bai ◽  
Kong Hui Guo ◽  
Dang Lu
Keyword(s):  
Optimum Design ◽  
Performance Index ◽  
High Speed ◽  
Objective Assessment ◽  
Driving Safety ◽  
Safety Index ◽  
Experiment Data ◽  
Evaluation Standards ◽  
Vehicle Handling ◽  
Running Performance

A method of suspension optimum design based on the tire and vehicle matching was introduced in this paper. Firstly, the vehicle handling stability evaluation standards considering tire matching with vehicle were determined by the subjective and objective assessment. Secondly, the quality, suspension kinematics and compliance characteristics and tire mechanics of prototype were tested. The vehicle model of prototype was built in Carsim with the corresponding experiment data. The model was verified by the results of the vehicle handling stability tests. Then a combination simulation platform was developed by making use of Isight, Matlab and Casim. Finally the optimal design of suspension kinematics and compliance characteristics and tire mechanics were conducted, taking straight running performance index, high-speed driving safety index and high-speed cornering performance index as the objective. The simulation results indicated that after optimization, the straight running performance and high-speed cornering performance of prototype could be improved.

Study on Decreasing Vibration of High-Speed Train Semi-Active Suspension System

2011 ◽  
Vol 230-232 ◽  
pp. 1104-1109
Author(s):  
Zhen Ping Fan ◽  
Heng Zeng ◽  
Jian Wei Yang ◽  
Jie Li
Keyword(s):  
Neural Network ◽  
Control Strategy ◽  
High Speed ◽  
Driving Safety ◽  
High Speed Train ◽  
Proportional Valve ◽  
Joint Simulation ◽  
The Neural Network ◽  
Adaptive Control Strategy ◽  
Active Damper

Lateral semi-active damper is designed by author based on the electro-hydraulic proportional valve, from the perspective angle of improving vehicle comfort; its purpose is to ensure vehicle driving safety. At the same time, the neural network adaptive control strategy is used for joint simulation of semi-active damper. The results show that lateral semi-active damper with the train body has significantly improved compared to the traditional passive lateral damper acceleration.

The impact of personality on driving safety among Chinese high-speed railway drivers

2016 ◽  
Vol 92 ◽  
pp. 9-14 ◽  
Author(s):  
Ming Guo ◽  
Wei Wei ◽  
Ganli Liao ◽  
Fulei Chu
Keyword(s):  
High Speed ◽  
Driving Safety ◽  
High Speed Railway ◽  
The Impact

Automotive Power Steering ‘Feel’

1981 ◽  
Vol 195 (1) ◽  
pp. 29-36 ◽  
Author(s):  
F J Adams
Keyword(s):  
High Speed ◽  
Rotary Valve ◽  
General Sense ◽  
Power Steering ◽  
Steering Feel ◽  
Driving Conditions ◽  
Torsion Bar

This paper discusses what is meant by ‘feel’, particularly but not exclusively under high speed driving conditions, what is required to provide a satisfactory ‘feel’, and to discuss how it may be possible to do this. It mainly, but not exclusively, considers motor cars and is basically confined to the modern power steering rotary valve which uses torsion bar springing, since this embraces by far the greatest number of power gears currently made. Most of the illustrations and references relate to rack and pinion steering but, in a general sense, all that is said can be applied to other types of steering gear.

Problem Driving Maneuvers of Elderly Drivers

2003 ◽  
Vol 1843 (1) ◽  
pp. 89-95 ◽  
Author(s):  
Susantha Chandraratna ◽  
Nikiforos Stamatiadis
Keyword(s):  
High Speed ◽  
Potential Problem ◽  
Older Drivers ◽  
Gap Acceptance ◽  
Left Turn ◽  
Crash Data ◽  
Limited Access ◽  
Lane Changes ◽  
Elderly Drivers ◽  
Crash Rates

Older drivers, who are the fastest growing segment of the U.S. population, experience high crash rates. An analysis was performed to evaluate potential problem maneuvers that may lead to higher crash involvement. Left turns against oncoming traffic, gap acceptance for crossing non-limited-access highways, and high-speed lane changes on limited-access highways are identified as such maneuvers. Older and younger driver accident propensities are measured, using Kentucky crash data. The findings of the analysis show that older drivers are more likely to be involved in crashes related with these maneuvers compared with younger drivers; older male drivers are safer than older female drivers in left-turn crashes and gap acceptance–related crashes, and having a passenger beside the older drivers makes for a safer driving environment. Potential countermeasures aiming to reduce the accident rates of older drivers are discussed.

scholarly journals Age-Related Diseases and Driving Safety

Geriatrics ◽  
2020 ◽  
Vol 5 (4) ◽  
pp. 80
Author(s):  
Michael Falkenstein ◽  
Melanie Karthaus ◽  
Ute Brüne-Cohrs
Keyword(s):  
Diabetes Mellitus ◽  
Driving Simulator ◽  
The Elderly ◽  
Cognitive Disorder ◽  
Driving Safety ◽  
Elderly Drivers ◽  
Age Related ◽  
Independent Life ◽  
Driving Fitness ◽  
The Impact

Due to demographic changes, the number of older drivers is steadily increasing. Mobility is highly relevant for leading an independent life in the elderly. It largely depends on car driving, which is a complex task requiring a multitude of cognitive and motor skills vulnerable to age- related functional deterioration. The almost inevitable effects of senescence may be potentiated by age-related diseases, such as stroke or diabetes mellitus. Respective pharmacological treatment may cause side effects, additionally affecting driving safety. The present article reviews the impact of age-related diseases and drug treatment of these conditions on driving fitness in elderly drivers. In essence, we focus on diseases of the visual and auditory systems, diseases of the central nervous system (i.e., stroke, depression, dementia and mild cognitive disorder, and Parkinson’s disease), sleep disorders, as well as cardiovascular diseases, diabetes mellitus, musculoskeletal disorders, and frailty. We will outline the role of functional tests and the assessment of driving behavior (by a driving simulator or in real traffic), as well as the clinical interview including questions about frequency of (near) accidents, etc. in the evaluation of driving fitness of the elderly. We also address the impact of polypharmacy on driving fitness and end up with recommendations for physicians caring for older patients.

scholarly journals Research on Evaluation Model for Secondary Task Driving Safety Based on Driver Eye Movements

2014 ◽  
Vol 6 ◽  
pp. 624561 ◽  
Author(s):  
Lisheng Jin ◽  
Huacai Xian ◽  
Yuying Jiang ◽  
Qingning Niu ◽  
Meijiao Xu ◽  
...  
Keyword(s):  
Eye Movements ◽  
Secondary Task ◽  
Clustering Algorithm ◽  
Driving Simulator ◽  
Evaluation Model ◽  
Safety Evaluation ◽  
Evaluation Index System ◽  
Driving Safety ◽  
Significant Difference ◽  
Driving Conditions

This study was designed to gain insight into the influence of performing different types of secondary task while driving on driver eye movements and to build a safety evaluation model for secondary task driving. Eighteen young drivers were selected and completed the driving experiment on a driving simulator. Measures of fixations, saccades, and blinks were analyzed. Based on measures which had significant difference between the baseline and secondary tasks driving conditions, the evaluation index system was built. Method of principal component analysis (PCA) was applied to analyze evaluation indexes data in order to obtain the coefficient weights of indexes and build the safety evaluation model. Based on evaluation scores, the driving safety was grouped into five levels (very high, high, average, low, and very low) using K-means clustering algorithm. Results showed that secondary task driving severely distracts the driver and the evaluation model built in this study could estimate driving safety effectively under different driving conditions.

scholarly journals Research on Safety and Static-Dynamic Legibility of Distressed Pavement

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Chengyuan Mao ◽  
Yiming Bie ◽  
Yulong Pei ◽  
Weiwei Qi
Keyword(s):  
Statistical Analysis ◽  
Driving Behavior ◽  
Driving Safety ◽  
Speed Limits ◽  
Braking Performance ◽  
Driving Conditions

In order to study the impacts of distressed pavement on driving safety, the drivers’ driving behavior and driving characteristics need to be analyzed. By analyzing the drivers’ characteristics, driving behavior’ and braking characteristics of vehicles, relation between static legibility distance of the distressed pavement under different driving conditions and dynamic legibility distance during driving is revealed via statistical analysis. The relation between vehicle speeds, braking performance, and the minimum safety legibility distance is developed. The recommended static legibility distances for different speed limits are proposed, which would be useful to improve the driving safety under adverse road conditions.

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