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Quality of Private Sector Travel-Time Data on Arterials 动脉上私营部门旅行时间数据的质量
Journal of Transportation Engineering-asce Pub Date : 2016-01-19 DOI: 10.1061/(ASCE)TE.1943-5436.0000815
Jia Hu, M. Fontaine, Jiaqi Ma
{"title":"Quality of Private Sector Travel-Time Data on Arterials","authors":"Jia Hu, M. Fontaine, Jiaqi Ma","doi":"10.1061/(ASCE)TE.1943-5436.0000815","DOIUrl":"https://doi.org/10.1061/(ASCE)TE.1943-5436.0000815","url":null,"abstract":"AbstractAccurate traffic state information is essential for both travelers and transportation agencies. In the past, traffic condition data were usually collected by a government agency using its own sensors. Recently, a number of private sector companies have started selling travel-time and speed data collected using probe vehicles, which provides a viable opportunity to outsource traffic data collection. Because these data sources and their related algorithms are proprietary, the reliability and accuracy of this private sector data is often an important issue for transportation agencies. Previous studies have examined the accuracy of private sector data on freeways, but arterials have not been examined extensively. Arterials represent a fundamentally more challenging environment for probe vehicle data given the larger variance in travel times created by traffic signals and other intermediate access points. In the research, the quality of private sector data on arterials is evaluated by utilizing Bluetoo...","PeriodicalId":305908,"journal":{"name":"Journal of Transportation Engineering-asce","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129103465","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: 26
Stop-Line Setback at a Signalized Roundabout: A Novel Concept for Traffic Operations 信号环岛停车线后退:交通操作的新概念
Journal of Transportation Engineering-asce Pub Date : 2016-01-13 DOI: 10.1061/(ASCE)TE.1943-5436.0000829
Y. Bie, Shaowu Cheng, S. Easa, X. Qu
{"title":"Stop-Line Setback at a Signalized Roundabout: A Novel Concept for Traffic Operations","authors":"Y. Bie, Shaowu Cheng, S. Easa, X. Qu","doi":"10.1061/(ASCE)TE.1943-5436.0000829","DOIUrl":"https://doi.org/10.1061/(ASCE)TE.1943-5436.0000829","url":null,"abstract":"AbstractThis paper proposes a novel concept, stop-line setback (SLSB), aimed at enhancing the capacity of signalized roundabouts and solving the problem of unbalanced flow patterns. This method is believed to avoid wasting acceptable time gaps and therefore increase the capacity of the approach with SLSB. However, to the best of the authors’ knowledge, no analytical work and little empirical work has yet explored the impact of SLSB. To bridge this gap, the phasing scheme and an adaptive control algorithm are developed for the roundabout with SLSB. Case studies are conducted under different traffic demands to evaluate the method. The findings show that (1) in peak hours the SLSB method is useful to improve the operational performance of the signalized roundabout and solve the problem of unbalanced flow patterns; (2) the right-turning vehicle volume is the critical factor that influences the benefits of the SLSB method; and (3) the phasing scheme and adaptive signal control algorithm developed in this paper...","PeriodicalId":305908,"journal":{"name":"Journal of Transportation Engineering-asce","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122054151","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: 17
Enhanced Decision-Making Framework Using Reliability Concepts for Freeway Facilities 基于可靠性概念的高速公路设施改进决策框架
Journal of Transportation Engineering-asce Pub Date : 2016-01-13 DOI: 10.1061/(ASCE)TE.1943-5436.0000797
Ali Hajbabaie, S. Aghdashi, N. Rouphail
{"title":"Enhanced Decision-Making Framework Using Reliability Concepts for Freeway Facilities","authors":"Ali Hajbabaie, S. Aghdashi, N. Rouphail","doi":"10.1061/(ASCE)TE.1943-5436.0000797","DOIUrl":"https://doi.org/10.1061/(ASCE)TE.1943-5436.0000797","url":null,"abstract":"This paper presents a decision-making framework based on a travel time reliability methodology developed under the U.S. Strategic Highway Research Program. Existing methods consider a set of predefined prevailing conditions for the analysis of freeway facilities as the base case. However, a reliability analysis accounts for multiple recurring and nonrecurring congestion sources to estimate the travel time distribution over a long time horizon. This approach considers variations in traffic demand levels, inclement weather conditions, and incidents that occur stochastically on a freeway facility. Several performance measures are defined based on the travel time distribution, which comprehensively cover the full range of operational conditions on the system. Based on the proposed decision-making framework, mobility strategies can be identified, evaluated, and improved.","PeriodicalId":305908,"journal":{"name":"Journal of Transportation Engineering-asce","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128139474","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: 5
Thornthwaite Moisture Index Modeling to Estimate the Implication of Climate Change on Pavement Deterioration 基于Thornthwaite湿度指数模型估算气候变化对路面劣化的影响
Journal of Transportation Engineering-asce Pub Date : 2016-01-13 DOI: 10.1061/(ASCE)TE.1943-5436.0000840
A. Zareie, Md. Shohel Reza Amin, L. Amador-Jimenez
{"title":"Thornthwaite Moisture Index Modeling to Estimate the Implication of Climate Change on Pavement Deterioration","authors":"A. Zareie, Md. Shohel Reza Amin, L. Amador-Jimenez","doi":"10.1061/(ASCE)TE.1943-5436.0000840","DOIUrl":"https://doi.org/10.1061/(ASCE)TE.1943-5436.0000840","url":null,"abstract":"AbstractThe objectives of this study are to simulate the Thornthwaite moisture index (TMI) for zones within the Atlantic provinces of Canada (APC) during three 30-year periods in the 21st century and to estimate the interactive effect of TMI and simulated freight traffic loads on the deterioration of pavement structure during the same period. Regional Highways 1, 2, 7, 15, 16, 102, and 104 connecting the APC are considered as the case study. Integration of spatial input-output and transportation models simulates freight movements on the selected regional highways during the period of 2012–2100. TMI is estimated using downscaled average monthly precipitation and temperature at 34 stations within the APC. Simulated traffic loads and TMI are applied to mechanistic modeling of roughness progression on the pavement structure. The findings of this study show that an increase in TMI can cause 11–68% increase of roughness progress rate on pavement structure.","PeriodicalId":305908,"journal":{"name":"Journal of Transportation Engineering-asce","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132497275","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: 13
Predictive Maintenance Model for Ballast Tamping 压载夯实的预测性维护模型
Journal of Transportation Engineering-asce Pub Date : 2016-01-11 DOI: 10.1061/(ASCE)TE.1943-5436.0000825
L. F. Caetano, P. F. Teixeira
{"title":"Predictive Maintenance Model for Ballast Tamping","authors":"L. F. Caetano, P. F. Teixeira","doi":"10.1061/(ASCE)TE.1943-5436.0000825","DOIUrl":"https://doi.org/10.1061/(ASCE)TE.1943-5436.0000825","url":null,"abstract":"AbstractIn order to optimally schedule railway track maintenance operations, it is essential to accurately estimate future track conditions. This study proposes a railway track geometry degradation model that considers uncertainties in the forecast by defining a track geometry reliability parameter. The degradation model is integrated in a multiobjective optimization approach to assess railway track maintenance strategies considering a cost–reliability trade off. Finally, a numerical application of the model to a real case study is presented. The results show the usefulness of the proposed approach to guarantee a required track geometry performance with effective maintenance investments.","PeriodicalId":305908,"journal":{"name":"Journal of Transportation Engineering-asce","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122607513","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: 38
Challenges in Developing a Transportation Sustainability Rating System That Meets the Preferences of a Department of Transportation 开发符合交通部偏好的交通可持续性评级系统的挑战
Journal of Transportation Engineering-asce Pub Date : 2016-01-11 DOI: 10.1061/(ASCE)TE.1943-5436.0000830
C. Clevenger, M. Ozbek, S. P. Simpson, R. Atadero
{"title":"Challenges in Developing a Transportation Sustainability Rating System That Meets the Preferences of a Department of Transportation","authors":"C. Clevenger, M. Ozbek, S. P. Simpson, R. Atadero","doi":"10.1061/(ASCE)TE.1943-5436.0000830","DOIUrl":"https://doi.org/10.1061/(ASCE)TE.1943-5436.0000830","url":null,"abstract":"AbstractIncreasingly, sustainability is a key indicator for planning transportation projects. As a result, evaluating the applicability of various transportation sustainability rating systems (TSRS) for adoption is important for the transportation industry in general, and for specific transportation organizations in particular. Several contending TSRSs are emerging, and provide various methods of guidance with regard to sustainability for infrastructure projects throughout project delivery. Different TSRSs, for example, employ different methods to determine or quantify sustainability and emphasize different sustainability factors. As a result, comparing the various systems and their suitability for implementation by a specific transportation organization can be a challenge. In this research, the authors apply the Analytical Hierarchy Process (AHP) as the method to assist in such an evaluation according to the Colorado Department of Transportation’s (CDOT’s) preferences. Application of AHP in previous rese...","PeriodicalId":305908,"journal":{"name":"Journal of Transportation Engineering-asce","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129626987","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: 10
An Optimization Strategy for Improving the Economic Performance of Heavy-Haul Railway Networks 提高重载铁路网经济效益的优化策略
Journal of Transportation Engineering-asce Pub Date : 2016-01-08 DOI: 10.1061/(ASCE)TE.1943-5436.0000822
Xi Xiang, Xiaomin Zhu
{"title":"An Optimization Strategy for Improving the Economic Performance of Heavy-Haul Railway Networks","authors":"Xi Xiang, Xiaomin Zhu","doi":"10.1061/(ASCE)TE.1943-5436.0000822","DOIUrl":"https://doi.org/10.1061/(ASCE)TE.1943-5436.0000822","url":null,"abstract":"AbstractOptimization of wagon flow organization in heavy-haul loading areas is meaningful to develop a heavy-haul railway network and to improve transportation capacity. This paper proposes a multiobjective optimization of the wagon flow organization for heavy-haul railway (MWFHR) to improve the transportation efficiency and the economic performance of a railway network. A bi-level algorithm is constructed to solve this model, where the lower level of the algorithm collects wagon flows for organization through the ant colony optimization algorithm, and the upper level screens for the best solution set that can minimize total cost under various constraints using the traversal search algorithm. The model is numerically examined in a real case study. Comprehensive practical testing results show that the newly proposed multiobjective optimization approach is promising in establishing an efficient railway network.","PeriodicalId":305908,"journal":{"name":"Journal of Transportation Engineering-asce","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121735223","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: 3
Development of Speed Correction Factors Based on Speed-Specific Distributions of Vehicle Specific Power for Urban Restricted-Access Roadways 基于城市限制通道车辆比功率速度比分布的速度修正因子研究
Journal of Transportation Engineering-asce Pub Date : 2016-01-06 DOI: 10.1061/(ASCE)TE.1943-5436.0000819
G. Song, Lei Yu, Yizheng Wu
{"title":"Development of Speed Correction Factors Based on Speed-Specific Distributions of Vehicle Specific Power for Urban Restricted-Access Roadways","authors":"G. Song, Lei Yu, Yizheng Wu","doi":"10.1061/(ASCE)TE.1943-5436.0000819","DOIUrl":"https://doi.org/10.1061/(ASCE)TE.1943-5436.0000819","url":null,"abstract":"Precise facility-specific speed correction factors (SCFs) are important parameters for direct and quick evaluation of the effect of traffic flow variations on vehicle emissions. However, the traditional method in developing SCFs is time consuming and costly, which impedes the development of SCFs and their applications. Based on massive instantaneous vehicle activity data, this paper proposes a novel method for deriving SCFs for light-duty vehicles on restricted access roadways in Beijing. First, a large sample of 60-s speed-specific trajectories is divided from the vehicle activity data, and grouped into speed-specific trajectory pools. Then, a database and two models of speed-specific and vehicle-specific power (VSP) distributions are established for different speed ranges. Further, by combining emission rates and VSP distributions, the SCFs for nitrogen oxides (NOx), hydrocarbons (HC), and carbon monoxide (CO) pollutants are derived for different emission standards. The derived SCFs from different sources of VSP distributions are compared with each other and validated by using another independent data source. The analysis result shows that, by using the VSP distribution database, the proposed method is applicable and effective in generating reliable SCFs in high resolution. The VSP distribution models can predict well SCFs within each speed range, while discontinuous predictions occur at their range boundary. Finally, several recommendations are made for future studies on developing comprehensive SCFs, which may help in practice to monitor dynamic traffic emissions when the real-time speed data are available.","PeriodicalId":305908,"journal":{"name":"Journal of Transportation Engineering-asce","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130111880","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: 15
Influence of Road Surface Characteristics on Tire–Road Noise for Thin-Layer Surfacings 路面特性对薄层路面轮胎-路面噪声的影响
Journal of Transportation Engineering-asce Pub Date : 2015-11-01 DOI: 10.1061/(ASCE)TE.1943-5436.0000790
Mingliang Li, W. Keulen, H. Ceylan, G. Tang, M. Ven, A. Molenaar
{"title":"Influence of Road Surface Characteristics on Tire–Road Noise for Thin-Layer Surfacings","authors":"Mingliang Li, W. Keulen, H. Ceylan, G. Tang, M. Ven, A. Molenaar","doi":"10.1061/(ASCE)TE.1943-5436.0000790","DOIUrl":"https://doi.org/10.1061/(ASCE)TE.1943-5436.0000790","url":null,"abstract":"AbstractThis study investigates the influence of different surface characteristics on tire–road noise of thin-layer road surfacings by a statistical modeling method. The surface characteristics considered are surface texture and sound absorption. Correlation analysis and multivariate linear regression are performed to detect the combined effect of surface texture and sound absorption on tire–road noise levels. The texture is characterized by mean profile depth as well as texture level on an octave band of wavelengths, while the sound absorption is described by the absorption coefficients on the frequency spectrum as well as by the maximum absorption coefficient only. In the regression, principal component regression is used to reduce the multicollinearity between the explanatory variables. The influence of surface characteristics of thin layer surfacing on tire–road noise is observed from the regression results and the correlation analysis.","PeriodicalId":305908,"journal":{"name":"Journal of Transportation Engineering-asce","volume":"308 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121061870","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: 9
Measuring the Sustainability of Shared-Use Paths: Development of the GreenPaths Rating System 衡量共用路径的可持续性:绿色路径评级系统的发展
Journal of Transportation Engineering-asce Pub Date : 2015-11-01 DOI: 10.1061/(ASCE)TE.1943-5436.0000796
M. O. Beiler, Emily Waksmunski
{"title":"Measuring the Sustainability of Shared-Use Paths: Development of the GreenPaths Rating System","authors":"M. O. Beiler, Emily Waksmunski","doi":"10.1061/(ASCE)TE.1943-5436.0000796","DOIUrl":"https://doi.org/10.1061/(ASCE)TE.1943-5436.0000796","url":null,"abstract":"AbstractThe application of sustainable performance measures continues to increase with the development of sustainable rating systems such as leadership in energy and environmental design (LEED), as well as transportation-focused programs, such as Greenroads. Established transportation rating systems focus primarily on the design and construction of motorized facilities such as local roadways and highways. As a result, there is the opportunity to develop a rating system focused on shared-use paths that are for nonmotorized (pedestrian and cycling) mobility. The primary objective of this research is to develop a sustainable rating system for the design and construction of shared-use paths, called GreenPaths, in order to promote environmental, social, and economic benefits through the development process. Sustainable indicators (credits) for shared-use paths are developed and then weighted using the analytic hierarchy process. GreenPaths is then applied to a real-world shared-use path facility, the Buffalo V...","PeriodicalId":305908,"journal":{"name":"Journal of Transportation Engineering-asce","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125040679","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: 14
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