Journal of Society for Transportation and Traffic Studies最新文献

Prediction of unconfined compressive strength of old asphalt concrete using multiple regression 旧沥青混凝土无侧限抗压强度的多元回归预测

Journal of Society for Transportation and Traffic Studies Pub Date : 2017-01-19 DOI: 10.31705/APTE.2014.28

S. Jaritngam, O. Somchainuek, Piti Chantruthai, V. Ratanavaraha, P. Taneerananon

引用次数: 0

A study of road network development prioritization at Lembata district - east nusa tenggara province, Indonesia 印尼东努沙登加拉省兰巴塔区道路网络发展优先次序的研究

Journal of Society for Transportation and Traffic Studies Pub Date : 2017-01-19 DOI: 10.31705/APTE.2014.27

L. Djakfar, M. Anwar, A. GerardusIgnasius

{"title":"A study of road network development prioritization at Lembata district - east nusa tenggara province, Indonesia","authors":"L. Djakfar, M. Anwar, A. GerardusIgnasius","doi":"10.31705/APTE.2014.27","DOIUrl":"https://doi.org/10.31705/APTE.2014.27","url":null,"abstract":"The objective of the study was to prepare a recommendation on how to set up a road network construction programming in Lembata District, Indonesia given such constraints as budget, types of construction, and so on. There were eight road segments across Lembata District included in the road network under consideration. To achieve the objective, the Analytic Hierarchy Process (AHP) method was applied. The process was initiated by brainstorming factors that may affect the selection and prioritization, called in the AHP analysis criteria. The factors were then evaluated using the Cut Off method to select the most suitable ones. From the analysis it was found that factors strongly influence in the selection were road condition, type of road surface, accessibility, mobility, population density, land use disparity, poverty alleviation program, and construction cost. Using the above criteria, an AHP analysis was then conducted to set up a prioritization recommendation for the road construction sequences. It was found that the construction cost was the most important factor to be considered, followed by land use disparity and road condition.","PeriodicalId":446196,"journal":{"name":"Journal of Society for Transportation and Traffic Studies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124084136","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

MODELING NONLINEAR SUSPENSION SYSTEM FOR IMPROVED BRAKING DISTANCE ESTIMATION 基于改进制动距离估计的非线性悬架系统建模

Journal of Society for Transportation and Traffic Studies Pub Date : 2017-01-19 DOI: 10.31705/APTE.2014.22

Jia Sheng Yang, T. Fwa, G. Ong

{"title":"MODELING NONLINEAR SUSPENSION SYSTEM FOR IMPROVED BRAKING DISTANCE ESTIMATION","authors":"Jia Sheng Yang, T. Fwa, G. Ong","doi":"10.31705/APTE.2014.22","DOIUrl":"https://doi.org/10.31705/APTE.2014.22","url":null,"abstract":"Braking distance of a vehicle is an important safety consideration in highway geometric design. Braking distances have been commonly estimated based on vehicle wheel loads and assumed tire- pavement friction. The use of classic vehicle dynamics simulation model, which simplifies tire stiffness as linear elastic function, is a main approach to estimate tire-pavement friction and predict braking distances. The interaction of nonlinear vehicle dynamics with pavement surface roughness has not been considered in analyzing its impact on vehicle braking distance. The impact of pavement roughness induced vehicle vibration on braking distance is the topic of interest in this paper. A nonlinear vehicle dynamics simulation model is proposed where tire stiffness is considered as a nonlinear elastic function in the analysis of vehicle dynamics. The model is implemented in MATLAB11.0. A hypothetical example is given to illustrate the possible difference between models with linear and nonlinear tire stiffness in calculating braking distance on a wet pavement. Although the model presented is rather simplified considering only nonlinear tire stiffness, and a more elaborate simulation model is required to examine in detail the actual impact of considering nonlinear vehicle dynamics, the example does show that further study is necessary to examine the need for vehicle dynamics simulation in order to reliably predict vehicle braking distances on highways, taking into account the effect of pavement roughness.","PeriodicalId":446196,"journal":{"name":"Journal of Society for Transportation and Traffic Studies","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121715805","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

PRIORITIZING TRANSPORT INFRASTRUCTURE PROJECTS AT EARLY STAGES OF PROJECTS 在项目的早期阶段优先考虑运输基础设施项目

Journal of Society for Transportation and Traffic Studies Pub Date : 2017-01-19 DOI: 10.31705/APTE.2014.25

I. Gamalath, L. Perera, S. Bandara

{"title":"PRIORITIZING TRANSPORT INFRASTRUCTURE PROJECTS AT EARLY STAGES OF PROJECTS","authors":"I. Gamalath, L. Perera, S. Bandara","doi":"10.31705/APTE.2014.25","DOIUrl":"https://doi.org/10.31705/APTE.2014.25","url":null,"abstract":"Investment on transport infrastructure is a significant component in a country’s budget as it is identified as a key factor to facilitate the country’s development. At the same time demand for transportation is positively correlated with the development. With this increasing demand for transport infrastructure and limited funding available, it is necessary to prioritise appropriate projects. Current appraisal practices at the early stages of projects fail to identify some important criterions and therefore, may ultimately end up not selecting the most appropriate project(s) which addresses contemporary concerns. Therefore the objective of this study is to identify a cost effective method and factors that should be considered in evaluating alternatives at the early stages of transport infrastructure projects. Both academic and grey literature was reviewed to identify current practises; methodologies and factors concerned in the recent past. Most of the time feasibility reports used descriptive format and often gave vague conclusions. Therefore the final selection of alternative(s) is implicit. A performance matrix was developed in this study based on multi criteria analysis linear additive model. This method was primarily selected as it is easy to use in practise. In addition to the traditional criterions, this matrix contains new criterions that should be looked into with the current interests. A case study for Kandy expressway alternative selection based on this developed performance matrix is presented in this paper. In addition to the new matrix, a modified scoring system was used in the analysis to minimise the variations, as scores are given by different experts. Further, analysis was compared with the view of different experts and results of sensitivity analysis to address the possible arguments on weight given to each criterion.","PeriodicalId":446196,"journal":{"name":"Journal of Society for Transportation and Traffic Studies","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134261635","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

ACCIDENT PREDICTION MODEL FOR HIGHWAYS WITH REST AREA BY USING POISSON AND BINOMIAL REGRESSION MODEL 基于泊松和二项回归模型的休息区公路事故预测模型

Journal of Society for Transportation and Traffic Studies Pub Date : 2017-01-09 DOI: 10.31705/APTE.2014.21

Chalat Tipakornkiat

引用次数: 4

DEVELOPMENT OF A MODEL TO PREDICT PAVEMENT TEMPERATURE FOR ALKUFRAH REGION IN LIBYA 开发预测利比亚alkufrah地区路面温度的模型

Journal of Society for Transportation and Traffic Studies Pub Date : 2014-12-30 DOI: 10.31705/APTE.2014.12

H. Salem, D. Uzelac, Z. L. Crvenković

引用次数: 3

THE EVOLUTION OF CRITERIA FOR IDENTIFYING BLACK SPOTS AND RECOMMENDATIONS FOR DEVELOPING COUNTRIES 识别黑点标准的演变和对发展中国家的建议

Journal of Society for Transportation and Traffic Studies Pub Date : 2014-09-30 DOI: 10.31705/APTE.2014.17

Huy Huu Nguyen, P. Taneerananon, C. Koren, Paramet Luathep

引用次数: 5

PROMOTION OF RAILWAY USE BY IMPROVING ACCESS TO RAILWAY STATIONS IN JAKARTA METROPOLITAN AREA 通过改善通往雅加达大都市区火车站的通道，促进铁路的使用

Journal of Society for Transportation and Traffic Studies Pub Date : 2014-09-30 DOI: 10.31705/APTE.2014.4

H. Kawaguchi, K. Kuromizu, Hideo Shiraishi, Sadayuki Yagi, T. Wachi

{"title":"PROMOTION OF RAILWAY USE BY IMPROVING ACCESS TO RAILWAY STATIONS IN JAKARTA METROPOLITAN AREA","authors":"H. Kawaguchi, K. Kuromizu, Hideo Shiraishi, Sadayuki Yagi, T. Wachi","doi":"10.31705/APTE.2014.4","DOIUrl":"https://doi.org/10.31705/APTE.2014.4","url":null,"abstract":"Many urban areas in developing countries, especially those considered emerging economies, are facing traffic congestion due to high rate of motorization. Though road-based public transport has been the primary mode for motorized trips, some developing countries possess railway networks in urban areas. Historically, passenger access to railway stations has been rarely considered. However, a railway having the highest passenger capacity can play a key role in alleviating traffic congestion in urban areas. This study aims to pursue appropriate measures to improve access to railway stations in developing countries. Two pilot projects, a park-and-ride and feeder bus service, were conducted at each railway station in suburban cities of Jakarta. According to the pre- and post-interview survey results on the park-and-ride project, users were generally satisfied with the project. In particular, some car commuters shifted to using railway and were highly satisfied. On the other hand, the interview survey results on the pilot project for the feeder bus service revealed that residents around the railway stations, especially those from high-income group, are rarely motivated to use the provided free feeder bus service to railway stations. By comparing the two results, bearing in mind that parking lots around the station and access roads to the station are required, it was found that park-and-ride can be an affordable railway promotion measure. It is also noteworthy that the railway service level is still a key factor affecting modal shift.","PeriodicalId":446196,"journal":{"name":"Journal of Society for Transportation and Traffic Studies","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116586366","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

INCORPORATING FUNCTIONAL PERFORMANCE IN MIXTURE DESIGN OF POROUS PAVEMENT 多孔路面混合料设计中结合功能性能

Journal of Society for Transportation and Traffic Studies Pub Date : 2014-09-30 DOI: 10.31705/APTE.2014.8

Lei Zhang, G. Ong, T. Fwa

{"title":"INCORPORATING FUNCTIONAL PERFORMANCE IN MIXTURE DESIGN OF POROUS PAVEMENT","authors":"Lei Zhang, G. Ong, T. Fwa","doi":"10.31705/APTE.2014.8","DOIUrl":"https://doi.org/10.31705/APTE.2014.8","url":null,"abstract":"Skid resistance and tire/road noise are critical functional elements of a modern pavement system and can affect roadway safety and environmental comfort. Although porous surface layer serves mainly as a functional course in most applications, the considerations on skid resistance and acoustic absorption in porous mixture design is inadequate in the existing specifications. Most current mixture design procedures assume that functional performances are adequate if volumetric and composition requirements are satisfied. However, the gap between design indices and in-situ performance should be bridged through thorough understanding of the mechanisms and relationships between them. This paper proposes an analytical framework to integrate skid resistance and tire/road noise performances into porous mixture design, based on numerical prediction models previously developed and validated by the authors. The framework takes account of the long-term effect, seasonal variation and temperature influence on skid number and sound pressure level. A functional performance index (FPI) is computed as the final output of the framework, denoting the quality of a porous mixture design with respect to its functional performance. A case study is then discussed to demonstrate the feasibility and capability of the proposed framework. With adequate knowledge on mixture properties and appropriate estimation on empirical parameters, this framework can help improve the quality of porous mixture design and enhance performance of the finished pavement.","PeriodicalId":446196,"journal":{"name":"Journal of Society for Transportation and Traffic Studies","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117258012","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: 1

The effect of distractors on starting-delay, missed opportunities and unsafe crossings of children and adults in a simulated pedestrian crossing task 在模拟人行横道任务中，干扰因素对儿童和成人启动延迟、错失机会和不安全过马路的影响

Journal of Society for Transportation and Traffic Studies Pub Date : 2014-09-30 DOI: 10.31705/APTE.2014.13

Z. Tabibi, K. Pfeffer

{"title":"The effect of distractors on starting-delay, missed opportunities and unsafe crossings of children and adults in a simulated pedestrian crossing task","authors":"Z. Tabibi, K. Pfeffer","doi":"10.31705/APTE.2014.13","DOIUrl":"https://doi.org/10.31705/APTE.2014.13","url":null,"abstract":"The aims of the research were to investigate the effect of distractors on the pedestrian skills of children and adults. The pedestrian skill of deciding when it is safe to cross a road (decision-making skill) was assessed by a computer-presented simulated pedestrian task. It was predicted that distractors would reduce the performance of all age groups, with the reduction being greater for younger children. The pedestrian skills of Grade 2, Grade 4 and Grade 6 children and adults were assessed in three conditions, without distractors, with on-screen distractors and with off-screen distractors. The results showed that off-road distractors, whether visual or auditory, increased the starting-delay of all age groups. There was no significant difference between off-road-visual and off-road-auditory distractors for any age group except for Grade 6 children. Off-road-auditory distractors increased starting-delay more than off-road-visual distractors for Grade 6 children. Furthermore, off-road and on-road distractors increased the number of missed opportunities for Grade 2 children. On-road distractors increased the number of missed opportunities of Grade 4 and Grade 6 children. The increase was greater for Grade 6 children. The number of unsafe crossings was higher in the condition without distractors. Overall, decision-making skills were vulnerable to distractors. The degree of vulnerability differed depending on age and the specific measures of pedestrian skill.","PeriodicalId":446196,"journal":{"name":"Journal of Society for Transportation and Traffic Studies","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132225052","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