Asian Transport Studies最新文献_第9页

Productivity impact of government-led bailout of Japan Airlines 政府主导的对日本航空公司的救助对生产力的影响

Asian Transport Studies Pub Date : 2022-01-01 DOI: 10.1016/j.eastsj.2022.100064

Katsuhiro Yamaguchi

引用次数: 2

Updating function model: Model updating method transferable in a wider range of data sizes 更新函数模型:模型更新方法可适用于更大范围的数据大小

Asian Transport Studies Pub Date : 2022-01-01 DOI: 10.1016/j.eastsj.2022.100071

Nobuhiro Sanko

{"title":"Updating function model: Model updating method transferable in a wider range of data sizes","authors":"Nobuhiro Sanko","doi":"10.1016/j.eastsj.2022.100071","DOIUrl":"10.1016/j.eastsj.2022.100071","url":null,"abstract":"<div><p>When data are available from two time points—older data with a larger number of observations and more recent data with a smaller number of observations—then model updating is utilised to take advantage of the different merits of each data set. However, the author's previous study demonstrated that conventional model updating methods—transfer scaling, joint context estimation, Bayesian updating, and combined transfer estimation—were inferior to models using only the more recent data. The present study examines an updating method that the author calls an ‘updating function model’ in which the parameters are assumed to follow the functions of gross domestic product per capita. The present study demonstrates that the updating function model often produces statistically significantly better forecasts than models using only the more recent data. The study extends the applicability of the model updating to cases in which the more recent time point has more observations than the older time point.</p></div>","PeriodicalId":100131,"journal":{"name":"Asian Transport Studies","volume":"8 ","pages":"Article 100071"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2185556022000177/pdfft?md5=6a7f5880c2a041152484b23baa9296d8&pid=1-s2.0-S2185556022000177-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75500285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Safety evaluation of personal mobility vehicles and pedestrians under mixed traffic flow using traffic simulation 基于交通模拟的混合交通流下个人机动车辆与行人安全评价

Asian Transport Studies Pub Date : 2022-01-01 DOI: 10.1016/j.eastsj.2021.100049

Takayuki Hishikawa , Miho Iryo-Asano

{"title":"Safety evaluation of personal mobility vehicles and pedestrians under mixed traffic flow using traffic simulation","authors":"Takayuki Hishikawa , Miho Iryo-Asano","doi":"10.1016/j.eastsj.2021.100049","DOIUrl":"10.1016/j.eastsj.2021.100049","url":null,"abstract":"<div><p>Personal mobility vehicles (PMVs) are small and slow vehicles that are designed to move within relatively dense pedestrian traffic on sidewalks or shared-use paths. Although various types of PMVs have been developed recently, the requirements of PMV performance in various traffic conditions are yet to be discussed in depth. This study aims to evaluate the impact of geometry and traffic conditions on the safety of mixed traffic flow between pedestrians and standing-type PMVs using a traffic simulation model. As a surrogate safety measure, an objective risk index based on collision probability and collision intensity is proposed. The results of the traffic simulations showed that the objective risk was affected by sidewalk width, traffic demand, and PMV movement parameters. A linear regression model was estimated to explain the safety index as a function of these variables, and combinations of applicable settings for PMV–pedestrian mixed traffic flow in terms of safety are discussed.</p></div>","PeriodicalId":100131,"journal":{"name":"Asian Transport Studies","volume":"8 ","pages":"Article 100049"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2185556021000171/pdfft?md5=899dd04e582ba3435bceb7deddbf7e52&pid=1-s2.0-S2185556021000171-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73742462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Analysis of the single-regime speed-density fundamental relationships for varying spatiotemporal resolution using Zen Traffic Data 基于Zen交通数据的时空分辨率变化单区速度-密度基本关系分析

Asian Transport Studies Pub Date : 2022-01-01 DOI: 10.1016/j.eastsj.2022.100066

Garima Dahiya, Yasuo Asakura, Wataru Nakanishi

{"title":"Analysis of the single-regime speed-density fundamental relationships for varying spatiotemporal resolution using Zen Traffic Data","authors":"Garima Dahiya, Yasuo Asakura, Wataru Nakanishi","doi":"10.1016/j.eastsj.2022.100066","DOIUrl":"10.1016/j.eastsj.2022.100066","url":null,"abstract":"<div><p>This study analyzed the single-regime speed-density (<em>v-k</em>) relationships for urban expressways using high resolution Zen Traffic Data (ZTD) containing all vehicles’ trajectory data obtained using image sensing technology. The steady-state traffic data were extracted for varying spatiotemporal resolutions, followed by estimation of traffic flow parameters, namely, jam density, kinematic-wave-speed, and proportionality factor, a behavioral parameter, using empirical data. Functional and shape parameters were estimated using the Levenberg–Marquardt algorithm. Statistical metrics were used to assess the performance and model fitness in all categories of linear, exponential and logarithmic, and complex forms of <em>v-k</em> relationships for different resolutions. The theoretical analysis revealed that certain relationships satisfy all the static properties and that only one satisfies both the dynamic properties of traffic behavior. Highly parameterized forms had the lowest errors. However, the linear form of model developed by May and Keller has high application potential.</p></div>","PeriodicalId":100131,"journal":{"name":"Asian Transport Studies","volume":"8 ","pages":"Article 100066"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2185556022000128/pdfft?md5=4ab3d9f56e775bb9666be9c14fd16d10&pid=1-s2.0-S2185556022000128-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80040419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Analysis on the driving behavior of old drivers by driving recorder GPS trajectory data 利用行车记录仪GPS轨迹数据分析老年驾驶员驾驶行为

Asian Transport Studies Pub Date : 2022-01-01 DOI: 10.1016/j.eastsj.2022.100063

Yuanfang Zhu , Meilan Jiang , Toshiyuki Yamamoto

引用次数: 3

Competition between airlines and railways in Japan focusing on the travel time 日本航空公司和铁路公司之间的竞争主要集中在旅行时间上

Asian Transport Studies Pub Date : 2022-01-01 DOI: 10.1016/j.eastsj.2022.100086

Kyoko Manaka , Satoru Hashimoto , Tomoaki Nakamura , Takao Goto

引用次数: 0

Estimating the potential retail impact of improving the pedestrian environment in the Downtown Cebu City 估计改善宿雾市区步行环境对零售业的潜在影响

Asian Transport Studies Pub Date : 2022-01-01 DOI: 10.1016/j.eastsj.2022.100059

Crispin Emmanuel Diaz, Konstantine Koh

{"title":"Estimating the potential retail impact of improving the pedestrian environment in the Downtown Cebu City","authors":"Crispin Emmanuel Diaz, Konstantine Koh","doi":"10.1016/j.eastsj.2022.100059","DOIUrl":"10.1016/j.eastsj.2022.100059","url":null,"abstract":"<div><p>Pedestrianization is often suggested as a means to revitalize downtown Cebu City. However, commercial establishments fear that the closure of main roads like Colon St to vehicle traffic will hurt their business rather than help. Studies in other countries point to many contextual factors that affect the outcomes of pedestrianization projects. This study reveals that improving walkways, though desirable, is not the most important intervention that will increase visitation to the area. Respondent pedestrians and commercial establishments gave priority to improving security and addressing urban environmental concerns such as cleanliness and flooding. If current clientele visit the area at least once more within a year, it is estimated that 30 million pesos and 31 million pesos in additional business revenue can be created for Colon St and Osmena Blvd respectively. This scale of benefit may help economically justify the needed interventions for improving the pedestrian environment in downtown Cebu City.</p></div>","PeriodicalId":100131,"journal":{"name":"Asian Transport Studies","volume":"8 ","pages":"Article 100059"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2185556022000050/pdfft?md5=da8e3bd3dbecbb900ff13cd403ce116d&pid=1-s2.0-S2185556022000050-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90459069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

An empirical study of taxi crashes in Singapore 新加坡出租车事故的实证研究

Asian Transport Studies Pub Date : 2022-01-01 DOI: 10.1016/j.eastsj.2022.100056

Liujiang Kang , Yue Zhao , Qiang Meng

{"title":"An empirical study of taxi crashes in Singapore","authors":"Liujiang Kang , Yue Zhao , Qiang Meng","doi":"10.1016/j.eastsj.2022.100056","DOIUrl":"10.1016/j.eastsj.2022.100056","url":null,"abstract":"<div><p>The 36-month taxi crash data include 41,538 taxi crash records distributed throughout 29 districts of Singapore (including Changi Airport), involving 16,933 taxis and 16,705 taxi drivers. We purposely use these data to analyze the impacts of nine influential factors on taxi crashes and give quantitative and practical suggestions on taxi driving safety. Our solid analysis shows that the maximum daily working time for a taxi driver is suggested to be less than 10 h for safety concerns because it could reduce the possible taxi crashes. In addition, the likelihood of taxi crashes in the daylight is the highest when compared to road conditions with streetlights or one without streetlights at all. We further use the random forest method to find the critical influential factors in blue and yellow taxi crashes. The relief and switcher modes are the two unique factors contributing to taxi crashes that are different from private car crashes. The findings of this study are of significant value for taxi operators and policymakers.</p></div>","PeriodicalId":100131,"journal":{"name":"Asian Transport Studies","volume":"8 ","pages":"Article 100056"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2185556022000025/pdfft?md5=673ec7d0f06f20f1d74458c2ea529c32&pid=1-s2.0-S2185556022000025-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91165126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Passenger's satisfaction with service quality of app-based ride hailing services in developing countries: Case of Lahore, Pakistan 发展中国家乘客对基于app的网约车服务质量的满意度:以巴基斯坦拉合尔为例

Asian Transport Studies Pub Date : 2022-01-01 DOI: 10.1016/j.eastsj.2022.100076

Syed Arif Hussain Shah, Hisashi Kubota

{"title":"Passenger's satisfaction with service quality of app-based ride hailing services in developing countries: Case of Lahore, Pakistan","authors":"Syed Arif Hussain Shah, Hisashi Kubota","doi":"10.1016/j.eastsj.2022.100076","DOIUrl":"10.1016/j.eastsj.2022.100076","url":null,"abstract":"<div><p>App-based ride hailing services (ABRHS) are becoming increasingly popular among masses in recent years. The assessment of customer's satisfaction with service quality of ride hailing services is essential for success of these services in the long run. Therefore, the current study aims to understand better the complexities of factors influencing the customer satisfaction and intentions towards app-based ride hailing services through the finding of a questionnaire study in Lahore, Pakistan. The collected data from 865 respondents were analyzed using exploratory factor analysis and structural model of traveler's satisfaction with the service quality was constructed. Structural Equation Modelling (SEM) also revealed that the commuter's overall satisfaction with service quality of app-based ride hailing service has positive impact on user's intentions to continue using services in future. The SEM further explained that overall satisfaction with the services mediates the relationship between service quality attributes including service & system attributes, service attraction attributes, network design attributes, and service reliability & professionalism attributes and commuter's intentions to continue using in the future. The further improvements in the quality attributes of app-based ride hailing services would enhance the traveler's overall satisfaction and their intentions to continuing using these services in the future.</p></div>","PeriodicalId":100131,"journal":{"name":"Asian Transport Studies","volume":"8 ","pages":"Article 100076"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2185556022000220/pdfft?md5=b2396413bf519038a8b11dbf8bbcf950&pid=1-s2.0-S2185556022000220-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80660423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Multi-criteria analysis for evaluating the function and location of roadside rest areas to improve disaster preparedness 以多准则分析评估路边休息区的功能及位置，以提高防灾能力

Asian Transport Studies Pub Date : 2022-01-01 DOI: 10.1016/j.eastsj.2022.100075

Shintaro Terabe, Ryota Onose, Hideki Yaginuma, Kosuke Tanaka

{"title":"Multi-criteria analysis for evaluating the function and location of roadside rest areas to improve disaster preparedness","authors":"Shintaro Terabe, Ryota Onose, Hideki Yaginuma, Kosuke Tanaka","doi":"10.1016/j.eastsj.2022.100075","DOIUrl":"10.1016/j.eastsj.2022.100075","url":null,"abstract":"<div><p>The roadside rest area (RRA), called “Michi no eki” in Japanese, is a facility that provides comfortable rest and diverse services to road users through community initiatives. There are many RRAs developed since its first establishment in 1993. It is important to identify the RRAs and regions where a certain function is weak, so as to build more substantial RRAs in the future. In this research, we divided the RRA functions into four categories, rest, information, regional collaboration, and disaster prevention, and listed their evaluation items. By checking the performance of RRAs in terms of the four functions, we can evaluate whether their performance can be improved by sharing functions with or complementing neighboring RRAs. We then calculated the evaluation results. During the evaluation, we compared two types of cases: one where the RRA was evaluated alone and the other where overlay evaluation was performed. The latter considered the distance among RRAs so that a complementary relationship with others could be expressed. Furthermore, we devised a method to calculate the impact of RRAs on an area and evaluate the region for this. By applying these methods, we were able to answer the question: “Where and for what functions are roadside rest areas needed?\"</p></div>","PeriodicalId":100131,"journal":{"name":"Asian Transport Studies","volume":"8 ","pages":"Article 100075"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2185556022000219/pdfft?md5=e7bfa71c18b539cc6ce2a4415f8e3de9&pid=1-s2.0-S2185556022000219-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86549244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0