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An Overview of the Ambulance Safety: Towards the Improvement in ASEAN Countries 东盟国家救护车安全发展概况
Pub Date : 2021-09-01 DOI: 10.56381/jsaem.v5i3.179
E. N. Roslin, M. Z. Zakaria, N. Mohd Nur, E. H. Sukadarin, M. Widia, A. Hamzah
Ambulances have been utilized as one of the important vehicles in operating the Emergency Medical Services (EMS) system. As safety is the utmost priority for an EMS crashes involving ambulances would not only delay patient transfers but would also endanger its occupants and other road users. Although the numbers of accidents involving ambulances are considered to be low as compared to other types of vehicles, preventive measures need to be taken in order to eliminate the high risk of accidents occurring as ambulances should be able to provide reliable and safe emergency transport services for the benefit of the public. An overview of ambulance accidents is highlighted in this paper. Based on the literature reviews, four main factors have been identified as the contributor to the causes of the accidents involving ambulances – driver-related factor, vehicle-related factor, task-related factor, and environment-related factor. From the findings, future research should be focused on creating mitigation plans on a structured preventive measure that could be implemented particularly in reducing fatal accidents involving the ambulance in ASEAN countries.
救护车已成为紧急医疗服务(EMS)系统运行的重要车辆之一。由于安全是紧急医疗服务的首要任务,涉及救护车的事故不仅会延误病人的转移,而且还会危及其乘员和其他道路使用者。虽然与其他类型的车辆相比,涉及救护车的事故数量被认为是低的,但由于救护车应该能够为公众提供可靠和安全的紧急运输服务,因此需要采取预防措施,以消除事故发生的高风险。本文重点介绍了救护车事故的概况。在文献综述的基础上,确定了驾驶员相关因素、车辆相关因素、任务相关因素和环境相关因素是导致救护车事故发生的主要因素。从调查结果来看,未来的研究应侧重于制定一项结构性预防措施的缓解计划,这种措施可以实施,特别是在减少东盟国家救护车的致命事故方面。
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引用次数: 1
An Analysis of Rear-End Impact Crash Characteristics and Injury Pattern in Malaysia 马来西亚汽车追尾碰撞特征及伤害模式分析
Pub Date : 2021-09-01 DOI: 10.56381/jsaem.v5i3.180
M. Widia, B.S. Jamaludin, A. A. Ab. Rashid, E. H. Sukadarin, N. S. Fauzan, H. A. Aziz, H. Osman, E. N. Roslin, Yassierli, H. Zadry, Y.T. Prasetyo, M.S. Neubert
Rear-end crashes are one of the most common types of accidents. The characteristics of rear impact crash (based on accident data in Malaysia) have not been well studied. The objective of this study is to investigate the rear impact crash characteristics in Malaysia between 2016 and 2018 using data obtained from Bukit Aman Traffic Investigation and Enforcement (JSPT), Royal Malaysia Police (RMP) Pol 27. The analysis revealed that motorcycles (40.3%) were the largest contributor to rear-end crashes, followed by occupant car (36.3%), lorry (16.3%), four-wheel (3.8%), bus (1.6%) and other vehicles (1.6%). The majority did not suffer any injury (60.8%), while there were fatalities (16.8%), injuries (14.3%), and severe injuries (8.1%). The highest percentage of fatal crashes occurred at the speed limit area 110 km/h (23.6%). The chi-square test showed that speed limit and type of crash were significantly associated (p<0.01). The result also showed a significant association between main vehicle part damage and injury level (p<0.01). The study shows a thorough examination and analysis of rear impact crash characteristics can provide important and useful information to guide transport policy, vehicle design, and driver education. Further research is needed to fully understand the key factors that contribute to rear-end impact crashes in Malaysia.
追尾事故是最常见的交通事故之一。后方碰撞的特征(基于马来西亚的事故数据)尚未得到很好的研究。本研究的目的是利用马来西亚皇家警察(RMP) Pol 27从武吉安交通调查和执法(JSPT)获得的数据,调查马来西亚2016年至2018年期间的后部碰撞碰撞特征。分析显示,摩托车(40.3%)是造成追尾事故的最大原因,其次是轿车(36.3%)、卡车(16.3%)、四轮驱动汽车(3.8%)、公共汽车(1.6%)和其他车辆(1.6%)。大多数人没有受到任何伤害(60.8%),而死亡(16.8%),受伤(14.3%)和严重伤害(8.1%)。在限速110公里/小时区域发生的致命事故比例最高(23.6%)。卡方检验显示车速限制与碰撞类型有显著相关(p<0.01)。结果表明,车辆主要部件损伤与损伤程度之间存在显著相关性(p<0.01)。该研究表明,彻底检查和分析后碰撞特性可以为指导交通政策、车辆设计和驾驶员教育提供重要而有用的信息。需要进一步的研究来充分了解导致马来西亚追尾事故的关键因素。
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引用次数: 0
Analysis of Injury Severity involving of Passenger Vehicles’ Occupants in Frontal Impact Collisions 乘用车正面碰撞中乘员伤害严重程度分析
Pub Date : 2021-09-01 DOI: 10.56381/jsaem.v5i3.185
M.A. Mohamad Radzi, A. Z. Zainal Abidin, A. Shabadin, N. S. Azman, S. A. Mohd Faudzi, N. F. Paiman, Y. Ahmad
In Malaysia, Passenger Vehicles (PV) accounted for the second-highest proportion of vehicles involved in road crashes (13.5%) as well as the total number of casualties (18.6%) after motorcycles. This raised the alarm that a thorough investigation should be conducted on the injury severity of occupants in PV crashes involving frontal impact collisions. The objective of this study is to evaluate injury severity outcome based on the selected crash parameters for the front seat occupants involved in frontal impact collision. The data for this study was sourced from the MIROS crash investigation database (MICARS) from 2007 until 2019, during which MIROS had investigated a total of 975 cases in both East and West Malaysia. After filtering through the cases, a total of 129 frontal impact crashes (PV versus PV) involving 206 PV and 349 front seat occupants were selected for data analysis. From the total number of selected cases, 82 cases were involved in head-on collisions while 47 cases were involved in side-impact collisions. As a result, crash configuration, crush extent, airbag availability, and seatbelt wearing are strongly related to the level of injury severity of frontal seat occupants involved in a frontal impact collision. Meanwhile, collision types and occupant seating position do not appear to be significantly related to the severity of the occupants’ injuries.
在马来西亚,乘用车(PV)在道路交通事故中所占的比例第二高(13.5%),伤亡总人数(18.6%)仅次于摩托车。这引起了人们的警觉,应该对包括正面碰撞在内的PV碰撞中乘员的受伤严重程度进行彻底的调查。本研究的目的是评估基于选定碰撞参数的前座乘员在正面碰撞中的伤害严重程度结果。本研究的数据来自MIROS坠机调查数据库(MICARS),从2007年到2019年,在此期间,MIROS在马来西亚东部和西部调查了975起案件。经过案例筛选,共选取129起正面碰撞事故(PV vs PV)进行数据分析,涉及206辆PV和349名前排乘客。从所选病例总数来看,迎面碰撞82例,侧面碰撞47例。因此,碰撞配置、挤压程度、安全气囊可用性和安全带佩戴程度与正面碰撞中前排座位乘员的受伤严重程度密切相关。与此同时,碰撞类型和乘员座位位置似乎与乘员受伤的严重程度没有显著关系。
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引用次数: 0
An Analysis of Injury Patterns for Drivers Based on Police Reported Frontal Crashes in Malaysia 基于马来西亚警方报告的正面碰撞事故对驾驶员伤害模式的分析
Pub Date : 2021-09-01 DOI: 10.56381/jsaem.v5i3.189
M. Noordin, H. Osman, H. A. Aziz, N. Rosli, M. Widia, E. H. Sukadarin, N. S. Fauzan, H. Zadry, A. A. Ab. Rashid
Most Southeast Asian countries including Malaysia have a relatively high number of traffic fatalities involving occupants of 4-wheel vehicles. The frontal impact collisions have been identified as the cause of most passenger vehicle occupant deaths. Therefore, a better understanding of real-world frontal crashes is needed in support of decision-making processes for future frontal crash test programs. One of the important elements to examine is the occupant injury patterns based on real-world crashes. Furthermore, different frontal crash configurations may result in different levels of injury severity. The objective of this study is to analyze the driver injury and body part injury levels based on police-reported frontal crashes in Malaysia. Road crash cases from 2015 to 2019 were obtained from Bukit Aman Traffic Investigation and Enforcement Department (JSPT), Royal Malaysia Police (PDRM). 81% of the cases comprised frontal crashes (full width & offset) while the rest involved sideswipe cases. Most of the drivers sustained no injury (70.77%) whereas 11.11%, 8.77%, and 6.87% suffered fatal injury, injury, and severe injury, respectively. The most frequent fatal cases among drivers involved injuries to multiple body regions for both configurations. The chi-square test revealed a significant association between the frontal crash configuration and driver injury level. The average odds ratio for fatality in frontal crashes compared to sideswipe configurations was 6.29. The rate of driver fatality per one crash has also increased marginally over the years. The study findings provide some information to support the recommendation that a full-width configuration is considered in future ASEAN NCAP frontal crash tests. Further research is also needed to fully understand real-world frontal crash impacts in Malaysia.
包括马来西亚在内的大多数东南亚国家涉及四轮车辆乘员的交通死亡人数相对较高。正面碰撞已被确定为大多数乘用车乘员死亡的原因。因此,需要更好地了解现实世界的正面碰撞,以支持未来正面碰撞测试项目的决策过程。研究的一个重要因素是基于真实碰撞的乘员伤害模式。此外,不同的正面碰撞配置可能导致不同程度的伤害严重程度。本研究的目的是分析基于马来西亚警方报告的正面碰撞事故的驾驶员损伤和身体部位损伤水平。2015年至2019年的道路交通事故案件来自马来西亚皇家警察(PDRM)武吉阿曼交通调查和执法部门(JSPT)。81%的案例包括正面碰撞(全宽度和偏移),而其余的案例涉及侧击。绝大多数司机未受伤(70.77%),而致死伤、重伤和重伤的比例分别为11.11%、8.77%和6.87%。司机中最常见的致命案例涉及两种配置的多个身体区域的伤害。卡方检验揭示了正面碰撞配置与驾驶员损伤水平之间的显著关联。正面碰撞与侧面碰撞的平均死亡率比值比为6.29。多年来,每次撞车事故的司机死亡率也略有上升。研究结果提供了一些信息,支持在未来东盟NCAP正面碰撞试验中考虑全宽度配置的建议。还需要进一步研究,以充分了解马来西亚现实世界的正面碰撞影响。
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引用次数: 0
Driving Performance Indicator (DPI) to Classify Distracted Driving Conditions in the Elderly Females 驾驶性能指标(DPI)对老年女性分心驾驶状态的分类
Pub Date : 2021-09-01 DOI: 10.56381/jsaem.v5i3.178
W. P. Loh, K. S. Tan, N. Yusop, Z. Mohd Jawi, M. Ibrahim
The driving performance and distracted driving conditions are among the key elements in road safety assessments. Quantitative measurements were reportedly used to characterize the driving performance. However, the main Driving Performance Indicators (DPI) that evaluate and distinguish the distracted driving conditions are unknown. The present study aimed to select the top three DPIs that best classify three levels of driving distractions targeting the elderly female group based on the publicly available database. Data involved eight driving session records of 15 subjects (female of elderly age group) captured in 62,284 instances x 6 attributes (5 DPI and 1 DriveCondition class) that were extracted based on the inclusion criteria set. The DPI features were selected based on the Correlation-based Feature Selection (CFS) and CorrelationAttributeEval (CA) algorithms of WEKA 3.8, reasoned by DPI's Pearson's correlation results. The Simple Random Undersampling approach was used to resolve the class imbalance state. The 'All' and 'with DPI feature selection DPI' (CFS and CA) datasets were classified using 1NN and J-48 algorithms at 10-fold cross-validation mode into three predefined classes of distracted driving conditions (Relax, Moderate and Intense). Classification accuracies achieved from 'All' and 'with DPI feature selection DPI' (CFS and CA) datasets were 66.10% to 68.86% (1NN) and 68.50% to 71.01% (J-48), respectively. The main DPI subsets nominated by CFS: {Speed, Acceleration, Steering, Laneoffset} and CA: {Speed, LaneOffset, Acceleration} each decreased classification accuracy from All datasets by a minimal 0.4% to 2.8% each. Findings demonstrated that Speed, Acceleration, and Lane Offset were high-ranked DPIs that sufficiently distinguished driving distraction classes for the elderly female drivers.
驾驶性能和分心驾驶状况是道路安全评估的关键因素之一。据报道,定量测量用于表征驾驶性能。然而,评估和区分分心驾驶状态的主要驾驶性能指标(DPI)是未知的。本研究的目的是根据公开的数据库,选择最能区分三种驾驶分心水平的前三个dpi,以老年女性群体为目标。数据包括在62,284个实例中捕获的15名受试者(老年年龄组女性)的8个驾驶会话记录x 6个属性(5个DPI和1个driveconcondition类),这些属性是基于纳入标准集提取的。根据DPI的Pearson相关结果,基于WEKA 3.8的correlation -based Feature Selection (CFS)和CorrelationAttributeEval (CA)算法选择DPI特征。采用简单随机欠抽样方法来解决类不平衡状态。在10倍交叉验证模式下,使用1NN和J-48算法将“All”和“with DPI feature selection DPI”(CFS和CA)数据集分类为三个预定义的分心驾驶状态类别(放松、中度和强烈)。“All”和“with DPI feature selection DPI”(CFS和CA)数据集的分类准确率分别为66.10% ~ 68.86% (1NN)和68.50% ~ 71.01% (J-48)。CFS指定的主要DPI子集:{Speed, Acceleration, Steering, Laneoffset}和CA: {Speed, Laneoffset, Acceleration}分别使所有数据集的分类精度降低了0.4%到2.8%。研究结果表明,速度、加速度和车道偏移是老年女性驾驶员驾驶分心的高阶dpi,足以区分驾驶分心的类别。
{"title":"Driving Performance Indicator (DPI) to Classify Distracted Driving Conditions in the Elderly Females","authors":"W. P. Loh, K. S. Tan, N. Yusop, Z. Mohd Jawi, M. Ibrahim","doi":"10.56381/jsaem.v5i3.178","DOIUrl":"https://doi.org/10.56381/jsaem.v5i3.178","url":null,"abstract":"\u0000 \u0000 \u0000The driving performance and distracted driving conditions are among the key elements in road safety assessments. Quantitative measurements were reportedly used to characterize the driving performance. However, the main Driving Performance Indicators (DPI) that evaluate and distinguish the distracted driving conditions are unknown. The present study aimed to select the top three DPIs that best classify three levels of driving distractions targeting the elderly female group based on the publicly available database. Data involved eight driving session records of 15 subjects (female of elderly age group) captured in 62,284 instances x 6 attributes (5 DPI and 1 DriveCondition class) that were extracted based on the inclusion criteria set. The DPI features were selected based on the Correlation-based Feature Selection (CFS) and CorrelationAttributeEval (CA) algorithms of WEKA 3.8, reasoned by DPI's Pearson's correlation results. The Simple Random Undersampling approach was used to resolve the class imbalance state. The 'All' and 'with DPI feature selection DPI' (CFS and CA) datasets were classified using 1NN and J-48 algorithms at 10-fold cross-validation mode into three predefined classes of distracted driving conditions (Relax, Moderate and Intense). Classification accuracies achieved from 'All' and 'with DPI feature selection DPI' (CFS and CA) datasets were 66.10% to 68.86% (1NN) and 68.50% to 71.01% (J-48), respectively. The main DPI subsets nominated by CFS: {Speed, Acceleration, Steering, Laneoffset} and CA: {Speed, LaneOffset, Acceleration} each decreased classification accuracy from All datasets by a minimal 0.4% to 2.8% each. Findings demonstrated that Speed, Acceleration, and Lane Offset were high-ranked DPIs that sufficiently distinguished driving distraction classes for the elderly female drivers. \u0000 \u0000 \u0000","PeriodicalId":286928,"journal":{"name":"Journal of the Society of Automotive Engineers Malaysia","volume":"199 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114418393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lift and Drag Performance Based on Varying Flapping Wing Camber at Low Reynolds Number of Micro Air Vehicles (MAVs) 低雷诺数下基于变扑翼弧度的微型飞行器升力阻力性能研究
Pub Date : 2021-09-01 DOI: 10.56381/jsaem.v5i3.177
H. Yusoff, M. Arifin, N. Shaari, M. Zainuddin, R. Mahmod, S. Suhaimi, W. M. Wan Mohamed
Flapping-Wing Micro Air Vehicles (FW-MAVs) are small hand-held flying vehicles that can maneuver in constrained space owing to their lightweight, low aspect ratio and the ability to fly in a low Reynolds number environment. In this study, the aerodynamic characteristics such as time-averaged lift (CL avg) and time-averaged drag (CD avg) of camber wings with different five wind tunnel test models with 6, 9, 12, and 15 per cent camber were developed and the results were compared with a flat wing to assess the effects of camber wing on the aerodynamic performance for flapping flight applications. The experiments were performed in an open chamber with non-return airflow with a test section of (0.3 x 0.3) m and capable of speeds from 0.5 to 30 m/s. The (CL avg) and (CD avg) as functions of the angle of attack at 100, associated with flapping frequency at 9 Hz and low Re = 3600 of the flapping motions concerning the incoming flows are measured by using a strain gauge balance and KYOWA PCD- 300A sensor interface data acquisition system. It is found that camber would bring significant aerodynamic benefits in a higher lift in comparison to the flat wing and increase with increasing camber instead of drag shows contrary a decreasing of performance with increase drag when the camber raised.
扑翼微型飞行器(FW-MAVs)是一种小型手持飞行器,由于其轻量化、低展弦比和在低雷诺数环境下飞行的能力,可以在受限空间内机动。在本研究中,采用6、9、12和15%的不同风洞试验模型,研究了弯曲翼的时间平均升力(CL avg)和时间平均阻力(CD avg)等气动特性,并将结果与平翼进行了比较,以评估弯曲翼对扑动飞行气动性能的影响。实验在不回流的开室中进行,测试截面为(0.3 x 0.3) m,速度为0.5 ~ 30 m/s。利用应变计天平和KYOWA PCD- 300A传感器接口数据采集系统,测量了100时迎角与9hz扑动频率和低Re = 3600的扑动运动关系的(CL avg)和(CD avg)。结果表明,与平面翼相比,在高升力条件下,弧度对气动性能有显著的好处,而当弧度升高时,其气动性能随弧度的增大而增大,而不是随阻力的增大而减小。
{"title":"Lift and Drag Performance Based on Varying Flapping Wing Camber at Low Reynolds Number of Micro Air Vehicles (MAVs)","authors":"H. Yusoff, M. Arifin, N. Shaari, M. Zainuddin, R. Mahmod, S. Suhaimi, W. M. Wan Mohamed","doi":"10.56381/jsaem.v5i3.177","DOIUrl":"https://doi.org/10.56381/jsaem.v5i3.177","url":null,"abstract":"\u0000 \u0000 \u0000Flapping-Wing Micro Air Vehicles (FW-MAVs) are small hand-held flying vehicles that can maneuver in constrained space owing to their lightweight, low aspect ratio and the ability to fly in a low Reynolds number environment. In this study, the aerodynamic characteristics such as time-averaged lift (CL avg) and time-averaged drag (CD avg) of camber wings with different five wind tunnel test models with 6, 9, 12, and 15 per cent camber were developed and the results were compared with a flat wing to assess the effects of camber wing on the aerodynamic performance for flapping flight applications. The experiments were performed in an open chamber with non-return airflow with a test section of (0.3 x 0.3) m and capable of speeds from 0.5 to 30 m/s. The (CL avg) and (CD avg) as functions of the angle of attack at 100, associated with flapping frequency at 9 Hz and low Re = 3600 of the flapping motions concerning the incoming flows are measured by using a strain gauge balance and KYOWA PCD- 300A sensor interface data acquisition system. It is found that camber would bring significant aerodynamic benefits in a higher lift in comparison to the flat wing and increase with increasing camber instead of drag shows contrary a decreasing of performance with increase drag when the camber raised. \u0000 \u0000 \u0000","PeriodicalId":286928,"journal":{"name":"Journal of the Society of Automotive Engineers Malaysia","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115652141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Private Vehicle Roadworthiness Inspection – Towards ELV Realization 私家车路况检验——迈向ELV的实现
Pub Date : 2021-09-01 DOI: 10.56381/jsaem.v5i3.182
M. S. Solah, A. Hamzah, A. H. Ariffin, M. S. Abdul Khalid, A. Salleh, Syakura A. Rahim, K. A. Abu Kassim
Being one of the most critical sectors worldwide, the rapid increase of automobility has necessitated effective management of End-of- Life Vehicles (ELVs). However, in Malaysia, an ELV policy and initiative is absent from the country's automotive ecosystem which resulted in a proliferation of aged and unsafe vehicles; thus potentially increasing the chance of occupant injury in a crash. The government had already mooted an ELV policy but due to public outcry, the proposed plan for the scrapping of aged vehicles was postponed. This paper aims to provide an overview of a potential private vehicle inspection to be introduced and also the challenges facing the government towards the implementation of the ELV directive in Malaysia. It is believed that the results presented in this paper will be useful to academics, government officials, and researchers to establish strategies for ELV policy in Malaysia effectively via a vehicle roadworthiness inspection.
作为世界范围内最关键的行业之一,汽车出行的快速增长要求对报废车辆进行有效的管理。然而,在马来西亚,该国的汽车生态系统中缺乏ELV政策和倡议,这导致了老化和不安全车辆的激增;因此潜在地增加了乘员在碰撞中受伤的机会。政府已经提出了一项ELV政策,但由于公众的强烈抗议,拟议的旧车报废计划被推迟。本文旨在概述潜在的私家车检查,并介绍政府在马来西亚实施ELV指令所面临的挑战。相信本文提出的结果将有助于学者,政府官员和研究人员通过车辆路况检查有效地制定马来西亚的ELV政策策略。
{"title":"Private Vehicle Roadworthiness Inspection – Towards ELV Realization","authors":"M. S. Solah, A. Hamzah, A. H. Ariffin, M. S. Abdul Khalid, A. Salleh, Syakura A. Rahim, K. A. Abu Kassim","doi":"10.56381/jsaem.v5i3.182","DOIUrl":"https://doi.org/10.56381/jsaem.v5i3.182","url":null,"abstract":"\u0000 \u0000 \u0000Being one of the most critical sectors worldwide, the rapid increase of automobility has necessitated effective management of End-of- Life Vehicles (ELVs). However, in Malaysia, an ELV policy and initiative is absent from the country's automotive ecosystem which resulted in a proliferation of aged and unsafe vehicles; thus potentially increasing the chance of occupant injury in a crash. The government had already mooted an ELV policy but due to public outcry, the proposed plan for the scrapping of aged vehicles was postponed. This paper aims to provide an overview of a potential private vehicle inspection to be introduced and also the challenges facing the government towards the implementation of the ELV directive in Malaysia. It is believed that the results presented in this paper will be useful to academics, government officials, and researchers to establish strategies for ELV policy in Malaysia effectively via a vehicle roadworthiness inspection. \u0000 \u0000 \u0000","PeriodicalId":286928,"journal":{"name":"Journal of the Society of Automotive Engineers Malaysia","volume":"46 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124201555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Road Lights Profiling Based on Road Lighting Setting-Up and Performances 基于道路照明设置和性能的道路照明分析
Pub Date : 2021-09-01 DOI: 10.56381/jsaem.v5i3.181
J. Prasetijo, M.A. Mohd Nar, Z. Mohd Jawi, Z. Ngadiron, M. E. Mahyeddin, M. Norrizan, M.F. Abd Latif
Roads and highways are the areas where road accidents commonly occurred, and the number increases during a certain period such as festive breaks. ASEAN NCAP is committed to ensuring the safety of vehicles in Southeast Asia by improving the rating systems and standards of a vehicle such as AEB and AHB. Additionally, efforts on the improvements of street/road lighting performances and facilities (profiling and design) would play an important role in safety along the road stretches since vehicle lighting are strongly correlated with visual effectiveness. Road lighting performance with low hence and low visual quality would contribute to accidents in certain road sections. Therefore, this study experimented with road lighting performance environments by using Luxmeter based on the Euro NCAP (2018) standard and guideline. A reference grid of road light measurement with a 1-meter interval was used to measure lighting performance on each distance interval. Two federal roads in Johor were picked as experiment sites, i.e. FT050 (Jalan Batu Pahat – Ayer Hitam – Kluang) and FT001 (Jalan Johor Bahru – Segamat). FT050 road is a two carriageway with a width average of 2.6 meters, 134- kilometer in length, and the lamp used most was a double arm lamp. FT001 is similar in width (2.6-meter), 992.6-kilometer in length, and used single- arm lamps. The study found that FT050’s lighting performance decreasing at each interval grid while away from the lights at the range of 38 lux to 16 lux, however, FT001's result was decreasing at mid-interval and it increases when approaching mid between the lights at 23 lux – 15 lux – 19 lux. The following study concluded that using single arm lighting systems (by turns) resulting in higher lights (lux) performances and larger (lux) distributions (coverage) on roads. Therefore, the installments of single arm lighting system (by turns) would be considered for lights performance and efficiency concerning the drivers' visibility.
道路和高速公路是交通事故多发的区域,在节日假期等特定时期,交通事故数量会增加。东盟NCAP致力于通过完善AEB和AHB等车辆评级系统和标准,确保东南亚地区的车辆安全。此外,改善街道/道路照明性能和设施(轮廓和设计)的努力将在道路延伸的安全方面发挥重要作用,因为车辆照明与视觉效果密切相关。低亮度及低视觉质素的道路照明性能会导致某些路段发生意外。因此,本研究使用基于欧洲NCAP(2018)标准和指南的Luxmeter对道路照明性能环境进行了实验。采用间隔1米的道路照明测量参考网格,测量每个距离间隔上的照明性能。柔佛州的两条联邦公路被选为实验地点,即FT050 (Jalan Batu Pahat - Ayer Hitam - Kluang)和FT001 (Jalan Johor Bahru - Segamat)。FT050公路为双行车道,平均宽2.6米,长134公里,使用最多的灯为双臂灯。FT001的宽度相似(2.6米),长度为992.6公里,使用单臂灯。研究发现,FT050在远离38 ~ 16勒克斯灯光时,其照明性能在每个间隔网格上都有所下降,而FT001的照明性能在间隔中间有所下降,在接近23 ~ 15 ~ 19勒克斯灯光中间时有所上升。下面的研究得出结论,使用单臂照明系统(轮流)导致更高的光(勒克斯)性能和更大的(勒克斯)分布(覆盖)在道路上。因此,单臂照明系统的安装(轮流)将考虑到灯光的性能和效率,以及司机的能见度。
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引用次数: 0
A Perspective Analysis of Road Accident Using Data Envelopment Analysis 基于数据包络分析的道路交通事故视角分析
Pub Date : 2021-08-16 DOI: 10.56381/jsaem.v5i1.151
K. Mokhtar, S. Ruslan, A. Abu Bakar, Wan Amiza Amneera Wan Ahmad, U. A. Mokhtar, W. Z. ABDUL HALIM, C.C. Hor
The rapid growth of the economy has led to the increased in road traffic networks and had indirectly led to the rapid cases of road accidents in Malaysia. Road accidents are one of the main contributors to human deaths in Malaysia. This paper attempts to measure road accidents in Malaysia by looking at the road accidents of 13 states and a federal territory. The aim is to measure the numbers and causes of road accidents by using Data Envelopment Analysis (DEA). Due to that, the input and output are identified to compute the efficiency level of road accidents. Apart of that, the trends in the number of road accidents in Malaysia is also depicted. For this study, the data from 2008 to 2011 for each Decision Making Unit (DMU) is analyzed. The result shows that the efficiency level did not determined by the number of vehicles on the road and the size of the state but it is determined by the utilization of resources by the authorities. It shows that managing input is important when the level of efficiency for the Decision-Making Unit (DMU) for the output is concerned. The outcome of this study supports the government measures to level up road maintenance in order to improve the efficiency level and curb the numbers of road accidents in Malaysia.
经济的快速增长导致道路交通网络的增加,并间接导致马来西亚道路事故的迅速发生。道路事故是造成马来西亚人死亡的主要原因之一。本文试图通过观察13个州和一个联邦领土的道路交通事故来衡量马来西亚的道路交通事故。目的是通过使用数据包络分析(DEA)来衡量道路交通事故的数量和原因。在此基础上,对输入和输出进行识别,计算道路事故的效率水平。除此之外,马来西亚道路交通事故数量的趋势也被描绘出来。本研究采用2008 - 2011年各决策单元(DMU)的数据进行分析。结果表明,效率水平不是由道路上的车辆数量和国家规模决定的,而是由当局对资源的利用决定的。这表明,当考虑到决策单位(DMU)对产出的效率水平时,管理投入是重要的。这项研究的结果支持政府的措施,以提高道路维护水平,以提高效率水平和遏制道路事故的数量在马来西亚。
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引用次数: 1
Pandemic COVID-19 Effect on Future Courier Technologies COVID-19大流行对未来快递技术的影响
Pub Date : 2021-08-16 DOI: 10.56381/jsaem.v5i1.146
W.J. Yahya
In Malaysia, when Movement Control Order (MCO) took place, many economic sectors are forced to shut down to control the pandemic. Most of the households are trapped in the house and trying to adapt to many new normal activities such as “work from home”, “virtual learning”, “online shopping” and many more. These new normal activities are increasing the demand of certain economic sectors such as Information and Communication Technology (ICT), digital banking, delivery services, etc.
在马来西亚,当行动管制令(MCO)生效时,许多经济部门被迫关闭,以控制大流行。大多数家庭被困在家里,试图适应许多新的正常活动,如“在家工作”、“虚拟学习”、“网上购物”等等。这些新常态活动正在增加某些经济部门的需求,如信息和通信技术(ICT)、数字银行、快递服务等。
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引用次数: 0
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Journal of the Society of Automotive Engineers Malaysia
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