Journal of Transportation Engineering-asce最新文献_第4页

Merging Preparation Behavior of Drivers: How They Choose and Approach Their Merge Positions at a Congested Weaving Area 驾驶员的归并准备行为:拥挤交织区驾驶员如何选择和接近归并位置

Journal of Transportation Engineering-asce Pub Date : 2016-09-01 DOI: 10.1061/(ASCE)TE.1943-5436.0000864

Xia Wan, P. Jin, Fan Yang, B. Ran

{"title":"Merging Preparation Behavior of Drivers: How They Choose and Approach Their Merge Positions at a Congested Weaving Area","authors":"Xia Wan, P. Jin, Fan Yang, B. Ran","doi":"10.1061/(ASCE)TE.1943-5436.0000864","DOIUrl":"https://doi.org/10.1061/(ASCE)TE.1943-5436.0000864","url":null,"abstract":"Vehicle merging is a tactical process. In the existing merging models, drivers need to select a target gap and adjust their speed to reach a comfortable merge position to execute lane changing. However, such sequential premerging preparation process has not yet been well-captured on the basis of the field trajectory data. In this study, the authors will focus on analyzing the lane-changing behavior as drivers choose and approach their merge positions at congested merging areas. This study is based on noise-filtered computer-based trajectory data. The authors classify the observed merging vehicles in a congested weaving section into original-gap-targeting (OGT) and forward-gap-targeting (FGT) vehicles. The analysis of the merge-position selection indicates different selection behavior between OGT and FGT merging vehicles. The length of target gap, the speed, and the route plan of vehicles surrounding the merging vehicles have an influence on their merge-position selection. To investigate merge tactics of merging vehicles, their speed synchronization and acceleration behaviors when approaching their merge positions were analyzed. The results illustrate that the acceleration and deceleration behaviors of the FGT merging vehicles in the approaching process should be split into two distinct stages: acceleration to overtake the rejected gap and deceleration to execute speed synchronization. The findings from this study shed light on the complex lane-changing process at merging areas.","PeriodicalId":305908,"journal":{"name":"Journal of Transportation Engineering-asce","volume":"534 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116232180","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: 12

Development of Emission Factors for an Urban Road Network Based on Speed Distributions 基于速度分布的城市路网排放因子研究

Journal of Transportation Engineering-asce Pub Date : 2016-09-01 DOI: 10.1061/(ASCE)TE.1943-5436.0000858

Ming Li, Lei Yu, Z. Zhai, Weinan He, G. Song

引用次数: 8

An Unsupervised Learning Approach for Analyzing Traffic Impacts under Arterial Road Closures: Case Study of East Liberty in Pittsburgh 一种分析主干道封闭下交通影响的无监督学习方法:以匹兹堡东自由为例

Journal of Transportation Engineering-asce Pub Date : 2016-09-01 DOI: 10.1061/(ASCE)TE.1943-5436.0000860

Yiming Gu, Z. Qian, Xiao-Feng Xie, Stephen F. Smith

引用次数: 2

Comparative Study of Asphalt Pavement Responses under FWD and Moving Vehicular Loading FWD与移动车辆荷载作用下沥青路面响应的比较研究

Journal of Transportation Engineering-asce Pub Date : 2016-08-31 DOI: 10.1061/(ASCE)TE.1943-5436.0000902

Hao Wang, Maoyun Li

引用次数: 48

Preflood Road Maintenance Strategy for a Road Authority 道路管理机构的洪水前道路养护策略

Journal of Transportation Engineering-asce Pub Date : 2016-08-30 DOI: 10.1061/(ASCE)TE.1943-5436.0000901

M. Khan, M. Mesbah, L. Ferreira, David J. Williams

{"title":"Preflood Road Maintenance Strategy for a Road Authority","authors":"M. Khan, M. Mesbah, L. Ferreira, David J. Williams","doi":"10.1061/(ASCE)TE.1943-5436.0000901","DOIUrl":"https://doi.org/10.1061/(ASCE)TE.1943-5436.0000901","url":null,"abstract":"This paper has derived a preflood road maintenance strategy. It provides an innovative approach by upgrading pavement strength now (Year 1 of the analysis) with a thin overlay, and then evaluating pavement lifecycle performance if a flood comes in different years. An after-flood treatment strategy would also be a part of this strategy package. The study has considered normal deterioration after a treatment given in Year 1 and uses the new roughness and rutting based road deterioration (RD) models to predict after-flood deterioration before providing postflood treatments. The study has used highway development and management (HDM-4) model for obtaining after-flood treatments. The results show pavement performance, necessary treatments at Year 1 and any year, required budget, and economic results. For a case study in Queensland, Australia, the treatment cost in Year 1 was about $21.13 billion, and the total preflood strategy cost is $37 billion to $38 billion. A thin overlay is adequate for after-flood rehabilitation. This preflood strategy is compared with a recently derived postflood strategy, and it appears that a preflood strategy can maintain the network better and demonstrate positive economic benefits.","PeriodicalId":305908,"journal":{"name":"Journal of Transportation Engineering-asce","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116655849","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: 4

Cycle-Length Strategies for a Diverging Diamond Interchange in a Coordinated Arterial 协调动脉中发散型菱形立交的周期长度策略

Journal of Transportation Engineering-asce Pub Date : 2016-08-08 DOI: 10.1061/(ASCE)TE.1943-5436.0000897

C. Day, D. Bullock

引用次数: 5

Pavement Marking Retroreflectivity and Crash Frequency: Segmentation, Line Type, and Imputation Effects 路面标线的反射率和碰撞频率:分割、线型和归因效应

Journal of Transportation Engineering-asce Pub Date : 2016-08-01 DOI: 10.1061/(ASCE)TE.1943-5436.0000863

B. Bektaş, Konstantina Gkritza, O. Smadi

{"title":"Pavement Marking Retroreflectivity and Crash Frequency: Segmentation, Line Type, and Imputation Effects","authors":"B. Bektaş, Konstantina Gkritza, O. Smadi","doi":"10.1061/(ASCE)TE.1943-5436.0000863","DOIUrl":"https://doi.org/10.1061/(ASCE)TE.1943-5436.0000863","url":null,"abstract":"This paper investigates the effects of segment length, line types, and imputed retroreflectivity values on pavement-marking retroreflectivity and crash frequency analyses. Road data, crash data, pavement condition data, and pavement-marking retroreflectivity data from Iowa Department of Transportation (DOT) databases were acquired and spatially integrated. Data sets for 1-, 3-, and 5-mi segments were prepared to investigate the effect of segmentation. Additional data sets with imputed and measured retroreflectivity data were prepared for comparison. A series of negative binomial regression analyses were run to estimate the expected number of crashes on varying segment lengths and data subsets based on the two retroreflectivity collection methods. The findings show that using smaller segments and data sets with measured retroreflectivity rather than imputed retroreflectivity leads to a more significant relationship between the retroreflectivity of longitudinal pavement markings and crash frequency. The findings also suggest that keeping longitudinal pavement markings in good condition has significant positive effects on safety. The results further suggested that the expected number of annual crashes significantly decreased with the increasing retroreflectivity of white-edge lines (WELs) and yellow-edge lines (YELs) for four-lane road segments. In addition, a significant relationship between pavement condition, measured with the International Roughness Index (IRI) and the expected number of crashes was found for all data sets.","PeriodicalId":305908,"journal":{"name":"Journal of Transportation Engineering-asce","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132088798","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: 22

Development of System Dynamic Approaches to Airport Pavements Maintenance 机场路面维修系统动态方法的发展

Journal of Transportation Engineering-asce Pub Date : 2016-08-01 DOI: 10.1061/(ASCE)TE.1943-5436.0000856

R. Tarefder, Mostaqur Rahman

引用次数: 11

Behavior of High-Speed Railway Ballastless Track Slabs Using Reactive Powder Concrete Materials 采用活性粉末混凝土材料的高速铁路无砟轨道板性能研究

Journal of Transportation Engineering-asce Pub Date : 2016-08-01 DOI: 10.1061/(ASCE)TE.1943-5436.0000849

Jian Yang, B. Kong, C. Cai, J. Wang

引用次数: 10

Performance Evaluation of Bus Routes Using Automatic Vehicle Location Data 基于车辆自动定位数据的公交线路性能评价

Journal of Transportation Engineering-asce Pub Date : 2016-08-01 DOI: 10.1061/(ASCE)TE.1943-5436.0000857

Yadan Yan, Zhiyuan Liu, Y. Bie

{"title":"Performance Evaluation of Bus Routes Using Automatic Vehicle Location Data","authors":"Yadan Yan, Zhiyuan Liu, Y. Bie","doi":"10.1061/(ASCE)TE.1943-5436.0000857","DOIUrl":"https://doi.org/10.1061/(ASCE)TE.1943-5436.0000857","url":null,"abstract":"Real survey data are of considerable significance for transit planners and operators to assess the performance of a bus route and then improve its level of service. Automatic vehicle location (AVL) system is a convenient tool to collect a large amount of real data from buses. This paper aims to propose a methodology to evaluate the operational performance of a bus route based on AVL data. First, several statistical indexes are selected for the evaluation, including percentile travel times, coefficient of variation (COV) of travel times, and average commercial speed and travel time distribution. Moreover, spatial and temporal features of travel time variation and transit regulation indexes are analyzed. Then the bus route with transit signal priority and dedicated bus lane in Suzhou, China, is taken as a case study to validate the proposed methodology. Numerical tests indicate that the most influential feature of travel time is its spatial and temporal patterns, which vary across segments and time-of-day intervals. Bus lane violation and route repetition may undermine the efficiency of priority measures. In addition, the schedule design has important impacts on the adherence and headway regularity.","PeriodicalId":305908,"journal":{"name":"Journal of Transportation Engineering-asce","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116772321","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: 19