Transportation Research Record: Journal of the Transportation Research Board最新文献_第4页

Joint Routing and Pricing Control in Bimodal Mixed Autonomy Networks with Elastic Demand and Three-Dimensional Passenger Macroscopic Fundamental Diagram 具有弹性需求和三维乘客宏观基本图的双模混合自治网络中的联合路由和定价控制

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-06-03 DOI: 10.1177/03611981241243080

Mohammadhadi Mansourianfar, Ziyuan Gu, M. Saberi

{"title":"Joint Routing and Pricing Control in Bimodal Mixed Autonomy Networks with Elastic Demand and Three-Dimensional Passenger Macroscopic Fundamental Diagram","authors":"Mohammadhadi Mansourianfar, Ziyuan Gu, M. Saberi","doi":"10.1177/03611981241243080","DOIUrl":"https://doi.org/10.1177/03611981241243080","url":null,"abstract":"The interaction between mixed autonomy traffic and public transport vehicles competing for limited road space is a less explored area of research. To evaluate the traffic dynamics in bimodal networks, a three-dimensional (passenger) network fundamental diagram, known as 3D-NFD (3D-pNFD), can be estimated that relates the accumulation of cars (autonomous and human-driven) and buses to the network vehicular (passenger) travel production. In this study, we propose a 3D-pNFD-based congestion pricing scheme considering three vehicle classes of buses, system-optimal (SO) seeking connected and automated vehicles (CAVs), and user-equilibrium (UE) seeking human-driven vehicles (HVs). We develop an iterative tri-level modeling framework for mode choice, pricing, and route choice in a mixed autonomy network. The lower level generates mixed equilibrium traffic flow through an integrated mixed equilibrium simulation-based dynamic traffic assignment model and a transit assignment model. The mid-level finds the optimal toll rates through a 3D-pNFD feedback-based controller. A nested logit-based mode choice model is also applied to capture travelers’ preferences toward three available modes and incorporates elastic demand. To encourage CAVs to follow the SO routing mode, they are provided with a discount on the congestion toll whereas UE-seeking HVs are subject to full price toll. Buses are also entirely exempt from the toll. We explore three scenarios with different discount rates on SO-seeking CAVs to investigate the effect of the incentive plans on the mode choice behaviors of road users in the pricing zone. The performance of the proposed model is evaluated in a large-scale network in Melbourne, Australia.","PeriodicalId":309251,"journal":{"name":"Transportation Research Record: Journal of the Transportation Research Board","volume":"44 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141270267","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

STC-PSSA: A New Model of Traffic Flow Forecasting Based on Spatiotemporal Convolution and Probabilistic Sparse Self-Attention STC-PSSA：基于时空卷积和概率稀疏自注意力的交通流预测新模型

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-06-03 DOI: 10.1177/03611981241252146

Hong Zhang, Linbiao Chen, Xijun Zhang, Jie Cao

{"title":"STC-PSSA: A New Model of Traffic Flow Forecasting Based on Spatiotemporal Convolution and Probabilistic Sparse Self-Attention","authors":"Hong Zhang, Linbiao Chen, Xijun Zhang, Jie Cao","doi":"10.1177/03611981241252146","DOIUrl":"https://doi.org/10.1177/03611981241252146","url":null,"abstract":"Traffic flow forecasting is the foundation of the dynamic control and application of intelligent transportation systems (ITS). It is also of significant practical value in alleviating road congestion. Given the periodic and dynamic changes in trafﬁc ﬂow and the spatiotemporal coupling interaction of complex road networks, trafﬁc ﬂow forecasting is challenging and rarely yields satisfactory prediction results. To capture the dynamic spatiotemporal characteristics of traffic flow, a new model of traffic flow forecasting based on spatiotemporal convolution and probabilistic sparse self-attention (STC-PSSA) is proposed. It consists of a spatiotemporal graph convolution network (ST-GCN) module, a spatiotemporal convolution module (ST-Conv), and a probabilistic sparse attention module (PSSA). ST-GCN consists of the gated temporal convolutional network (G-TCN) and the graph convolution network (GCN), which are used to capture the temporal dependence and spatial correlation of the traffic flow, respectively. Multiple ST-GCNs are stacked to handle spatial features at various time levels. The ST-Conv captures intricate temporal dependence at the same location and dynamic spatial features at neighboring locations simultaneously. The PSSA combines dynamic spatiotemporal features and performs long-term forecasting efficiently. The experimental results demonstrate that the STC-PSSA model can accurately extract the dynamic spatiotemporal characteristics of traffic flow and outperforms the popular baseline methods in forecasting accuracy.","PeriodicalId":309251,"journal":{"name":"Transportation Research Record: Journal of the Transportation Research Board","volume":"40 34","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141270306","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

Answers to Your Resistivity Questions and Helpful Findings to Develop a Robust Resistivity Specification 电阻率问题解答以及有助于制定可靠电阻率规范的有用结论

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-05-23 DOI: 10.1177/03611981241243330

Jagan Gudimettla, Josh Brinegar, Mike Praul, Jim Grove, Bob Conway

{"title":"Answers to Your Resistivity Questions and Helpful Findings to Develop a Robust Resistivity Specification","authors":"Jagan Gudimettla, Josh Brinegar, Mike Praul, Jim Grove, Bob Conway","doi":"10.1177/03611981241243330","DOIUrl":"https://doi.org/10.1177/03611981241243330","url":null,"abstract":"Many states are currently in the process of evaluating the use of surface resistivity (SR) or bulk resistivity (BR) tests to assess permeability of concrete in lieu of the standard test method for electrical indication of concrete’s ability to resist chloride ion penetration (AASHTO T 277 and ASTM C1202) which is commonly referred to as the rapid chloride permeability test (RCPT). A few states, such as Louisiana and Maine, implemented resistivity testing in their specifications many years ago. As with any test method implementation, it is important to learn from data generated and experience gained to further refine the specifications in respect of both testing protocols and the specification limits. In this paper, the Federal Highway Administration’s Mobile Concrete Technology Center SR and BR data from 30 field projects in 25 states is analyzed to provide information that could be helpful to agencies as they specify or improve their specifications with respect to resistivity testing. This paper attempts to answer questions related to 1) change in resistivity testing results with age, 2) range and variability of resistivity data from mainline paving mixtures, 3) comparison of test results between SR and BR data, 4) comparison of resistivity data gathered with equipment from various vendors, and 5) use of 28 versus 56 day data.","PeriodicalId":309251,"journal":{"name":"Transportation Research Record: Journal of the Transportation Research Board","volume":"47 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141103450","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

Bi-Objective Battery Electric Truck Dispatching Problem with Backhauls and Time Windows 带回程和时间窗口的双目标电池电动卡车调度问题

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-05-23 DOI: 10.1177/03611981241246270

Dongbo Peng, Guoyuan Wu, K. Boriboonsomsin

{"title":"Bi-Objective Battery Electric Truck Dispatching Problem with Backhauls and Time Windows","authors":"Dongbo Peng, Guoyuan Wu, K. Boriboonsomsin","doi":"10.1177/03611981241246270","DOIUrl":"https://doi.org/10.1177/03611981241246270","url":null,"abstract":"The battery electric truck (BET) has emerged as a promising solution to reduce greenhouse gas emissions in urban logistics, given the current strict environmental regulations. This research explores the formulation and solution of the bi-objective BET dispatching problem with backhauls and time windows, aiming to simultaneously reduce environmental impacts and enhance the efficiency of urban logistics. From the sustainability perspective, one of the objectives is to minimize total energy costs, which include energy consumption and battery replacement expenses. On the other hand, from an economic perspective, the other objective is the minimization of labor costs. To solve this bi-objective BET dispatching problem, we propose an innovative approach, integrating an adaptive large neighborhood search-based metaheuristics algorithm with a multi-objective optimization strategy. This integration enables the exploration of the trade-off between fleet energy expenses and labor costs, optimizing the dispatching decisions for BETs. To validate the proposed dispatching strategy, extensive experiments were conducted using real-world fleet operations data from a logistics fleet in Southern California. The results demonstrated that the proposed approach yields a set of Pareto solutions, showcasing its effectiveness in finding a balance between energy efficiency and labor costs in urban logistics systems. The findings of this research contribute to advancing sustainable urban logistics practices and provide valuable insights for fleet operators in effectively managing BET fleets to reduce environmental impacts while maintaining economic efficiency.","PeriodicalId":309251,"journal":{"name":"Transportation Research Record: Journal of the Transportation Research Board","volume":"20 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141104927","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

Implementation of Progressive Design-Build in Airport Capital Construction Projects 在机场基本建设项目中实施渐进式设计-建设

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-05-23 DOI: 10.1177/03611981241249743

Phuong H.D. Nguyen, Daniel Tran, Sid Scott, Linda Konrath

{"title":"Implementation of Progressive Design-Build in Airport Capital Construction Projects","authors":"Phuong H.D. Nguyen, Daniel Tran, Sid Scott, Linda Konrath","doi":"10.1177/03611981241249743","DOIUrl":"https://doi.org/10.1177/03611981241249743","url":null,"abstract":"Alternative contracting methods (ACMs) have been increasingly used for airport capital construction projects to explore the opportunity for achieving better cost and time savings than traditional design-bid-build. Progressive design-build (PDB), an emerging variation of design-build, stands out as a promising delivery method that promotes collaboration between project stakeholders. Although PDB has been successfully used across building, water/wastewater, and transit construction sectors, its implementation in the aviation industry is still limited because of legislative considerations, regulatory policies, and funding constraints. A research gap exists in systematically investigating current practices in implementing PDB in airport projects. The main objective of this study is to explore the selection criteria, implementation strategies, success factors, and lessons learned from using PDB for airport capital construction projects. This study employed a triangulation research methodology, including a comprehensive review of PDB guidance and manuals, an industry survey of 39 airports across the U.S., and structured interviews with 12 airport representatives. This study found that the top four criteria for selecting PDB are: flexibility to handle complexity, reducing claims, industry input on constructability, and cost control. The main benefits of using PDB for airport construction projects include improving project schedules, enhancing design control levels, and better management of project complexity and risks. This study contributes to the body of knowledge by providing insights into the current PDB practices for airport capital projects. Lessons learned from implementing PDB can help airport authorities and owners better administer and manage their projects.","PeriodicalId":309251,"journal":{"name":"Transportation Research Record: Journal of the Transportation Research Board","volume":"31 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141107994","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

Pozzolanic Reactivity of High-Alkali Supplementary Cementitious Materials and Its Impact on Mitigation of Alkali-Silica Reaction 高碱补充胶凝材料的胶凝反应活性及其对缓解碱硅反应的影响

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-05-23 DOI: 10.1177/03611981241246989

Weiqi Wang, James Roberts, Prasad Rangaraju

{"title":"Pozzolanic Reactivity of High-Alkali Supplementary Cementitious Materials and Its Impact on Mitigation of Alkali-Silica Reaction","authors":"Weiqi Wang, James Roberts, Prasad Rangaraju","doi":"10.1177/03611981241246989","DOIUrl":"https://doi.org/10.1177/03611981241246989","url":null,"abstract":"The growing scarcity of conventional supplementary cementitious materials (SCMs) such as Class F, Class C fly ashes, and slag has necessitated exploring alternative SCMs previously considered suboptimal. In particular, high-alkali SCMs are often avoided because of the potential concern that their alkali content could release into the concrete pore solution, thus exacerbating the potential for alkali-silica reaction (ASR). However, preliminary research indicates that not all high-alkali SCMs are deleterious, and some can effectively suppress the ASR expansive reaction when used in sufficient dosage levels. This study evaluates the feasibility of using high-alkali SCMs, such as high-alkali natural pozzolans and reclaimed fly ashes, focusing on their pozzolanic reactivity and the correlation between the reactivity and their ASR mitigation performance. The pozzolanic reactivity of the SCMs was evaluated by the R3 test per ASTM C1897 and strength activity index test per ASTM C311. Thermogravimetric analysis was used to determine the calcium hydroxide consumption by the SCMs. ASR mitigation performance of SCMs was evaluated in accordance with American Association of State Highway and Transportation Officials (AASHTO) T380 miniature concrete prism test. Additionally, pore solution expression and analysis of paste specimens were conducted to determine the correlation between the total alkali and the released alkali levels into the pore solution. Based on the results of this study, all SCMs indicated high pozzolanic reactivity; however, individual performance varied by test method. Ultimately, the high-alkali SCMs, particularly natural pozzolans, did not appear to release any significant levels of alkalis into the pore solution readily and, therefore, show potential for ASR mitigation when used in sufficient dosage levels.","PeriodicalId":309251,"journal":{"name":"Transportation Research Record: Journal of the Transportation Research Board","volume":"52 37","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141103199","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

Improving Effectiveness of the Safety Service Patrol Programs: A Discrete Event-Based Simulation Approach 提高安全服务巡逻计划的效率：基于离散事件的模拟方法

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-05-23 DOI: 10.1177/03611981241248652

Junqing Wang, Mecit Cetin, Hong Yang, Kun Xie, Guocong Zhai, Sherif Ishak

{"title":"Improving Effectiveness of the Safety Service Patrol Programs: A Discrete Event-Based Simulation Approach","authors":"Junqing Wang, Mecit Cetin, Hong Yang, Kun Xie, Guocong Zhai, Sherif Ishak","doi":"10.1177/03611981241248652","DOIUrl":"https://doi.org/10.1177/03611981241248652","url":null,"abstract":"Safety service patrols (SSPs) play an important role in incident management on highways. It is critical to respond to incidents in a timely manner as this can significantly reduce nonrecurrent congestion and improve safety. Therefore, it is essential to allocate available SSP vehicles to highway segments such that their effectiveness is maximized. This study aimed to develop a simulation-based framework to assist with SSP service optimization. More specifically, a discrete event-based simulation tool (i.e., SSP-OPT) with customizable parameters was developed to help plan the optimum patrol routes based on available SSP resources and predicted incidents. The developed tool was tested with roadway traffic and incident data from the Virginia highway network. After model calibration, the simulation results showed that the developed SSP-OPT tool could replicate the patrol routes with similar performance to the field observations, validating the tool. Further, adopting the tool for corridor-level optimization could help to identify the best patrol plan to minimize SSP response time and maximize SSP response rates for a given number of SSP vehicles. The SSP-OPT tool requires minimal user input (e.g., segment lengths, annual average daily traffic) and has the flexibility to be easily applied to any highway corridor once calibrated. The tool generates various performance metrics to enable more informed decision making in SSP route planning.","PeriodicalId":309251,"journal":{"name":"Transportation Research Record: Journal of the Transportation Research Board","volume":"26 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141107788","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

Integrated Optimization Model of Lane Function and Signal Control for Tandem Intersections 串联交叉口的车道功能和信号控制综合优化模型

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-05-23 DOI: 10.1177/03611981241247168

Zhe Zheng, Kun An, Zicheng Su, Nan Zheng, Wanjing Ma

{"title":"Integrated Optimization Model of Lane Function and Signal Control for Tandem Intersections","authors":"Zhe Zheng, Kun An, Zicheng Su, Nan Zheng, Wanjing Ma","doi":"10.1177/03611981241247168","DOIUrl":"https://doi.org/10.1177/03611981241247168","url":null,"abstract":"This paper presents an integrated optimal controller for the tandem intersection with lane function design and signal control, aiming to improve intersection efficiency and service reliability with a multi-objective formulation. The tandem intersection is a type of unconventional intersection that can re-organize the vehicles at entrance lanes with sorting areas, and improve intersection capacity through the coordination of pre-signals and main signals. However, most existing studies related to tandem intersection control assume that the lane functions in the sorting areas for both the through and left-turn movements are the same, and the traffic demand remains static. To fill these gaps, this paper first identifies six different tandem control modes based on the different lane functions and phase sequence schemes in the sorting area, and the corresponding delay models for each mode are derived. Furthermore, an integrated optimization model is developed to minimize the mean and semistandard deviation of the intersection delay, and the Non-dominated Sorting Genetic Algorithm-II is used to obtain the optimal solution. A case study is conducted in a real-world intersection in Melbourne, Australia, under various traffic conditions. The results show that the proposed method can decrease average delay and queue length by 19.61% and 20.94%, respectively, compared with conventional intersection design.","PeriodicalId":309251,"journal":{"name":"Transportation Research Record: Journal of the Transportation Research Board","volume":"40 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141103567","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

Interpretable Machine Learning for Mode Choice Modeling on Tracking-Based Revealed Preference Data 基于跟踪揭示偏好数据的模式选择建模的可解释机器学习

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-05-23 DOI: 10.1177/03611981241246973

Victoria Dahmen, S. Weikl, K. Bogenberger

{"title":"Interpretable Machine Learning for Mode Choice Modeling on Tracking-Based Revealed Preference Data","authors":"Victoria Dahmen, S. Weikl, K. Bogenberger","doi":"10.1177/03611981241246973","DOIUrl":"https://doi.org/10.1177/03611981241246973","url":null,"abstract":"Mode choice modeling is imperative for predicting and understanding travel behavior. For this purpose, machine learning (ML) models have increasingly been applied to stated preference and traditional self-recorded revealed preference data with promising results, particularly for extreme gradient boosting (XGBoost) and random forest (RF) models. Because of the rise in the use of tracking-based smartphone applications for recording travel behavior, we address the important and unprecedented task of testing these ML models for mode choice modeling on such data. Furthermore, as ML approaches are still criticized for leading to results that are hard to understand, we consider it essential to provide an in-depth interpretability analysis of the best-performing model. Our results show that the XGBoost and RF models far outperform a conventional multinomial logit model, both overall and for each mode. The interpretability analysis using the Shapley additive explanations approach reveals that the XGBoost model can be explained well at the overall and mode level. In addition, we demonstrate how to analyze individual predictions. Lastly, a sensitivity analysis gives insight into the relative importance of different data sources, sample size, and user involvement. We conclude that the XGBoost model performs best, while also being explainable. Insights generated by such models can be used, for instance, to predict mode choice decisions for arbitrary origin–destination pairs to see which impacts infrastructural changes would have on the mode share.","PeriodicalId":309251,"journal":{"name":"Transportation Research Record: Journal of the Transportation Research Board","volume":"44 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141107830","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

Spatial-Temporal Patterns and Driving Factors of Logistics Carbon Emissions: Case Study of Yangtze River Delta in China 物流碳排放的时空格局与驱动因素：中国长江三角洲案例研究

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-05-23 DOI: 10.1177/03611981241242068

Enyan Zhu, Jian Yao, Wenjia Zheng, Chang Sun, Mei Sha

引用次数: 0