Transportation最新文献_第10页

Sufficient access? Activity participation, perceived accessibility and transport-related social exclusion across spatial contexts 交通是否足够便利？不同空间环境下的活动参与、可感知的可达性和与交通相关的社会排斥

IF 4.3 2区工程技术

Transportation Pub Date : 2024-02-17 DOI: 10.1007/s11116-024-10470-z

Felix Johan Pot, Eva Heinen, Taede Tillema

{"title":"Sufficient access? Activity participation, perceived accessibility and transport-related social exclusion across spatial contexts","authors":"Felix Johan Pot, Eva Heinen, Taede Tillema","doi":"10.1007/s11116-024-10470-z","DOIUrl":"https://doi.org/10.1007/s11116-024-10470-z","url":null,"abstract":"<p>Promoting social inclusion through facilitating the participation in social and economic activities is a central goal of land-use and transport planning. This study examines the relationship between activity participation and experiences of transport-related social exclusion across different spatial accessibility levels in the Netherlands. Using perceived accessibility as an indicator of the benefits derived from spatial opportunities, this paper reveals a weak and non-linear connection between activity participation and satisfaction with accessibility, which becomes negligible at higher participation levels. Even when individuals have low engagement levels, they often report high perceived accessibility, indicating voluntary non-participation. In rural areas with limited local opportunities, constrained participation is more prominent, especially for those with limited mobility options. The weak correlations between participation and experienced benefits from accessibility across diverse spatial contexts emphasize the importance of considering perceived accessibility alongside spatial and activity data in normative debates on determining the sufficiency of accessibility.</p>","PeriodicalId":49419,"journal":{"name":"Transportation","volume":"36 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139750275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Eastern paradigm of urban mobility: the case of Erbil city, Iraq 城市交通的东方模式：伊拉克埃尔比勒市的案例

IF 4.3 2区工程技术

Transportation Pub Date : 2024-02-12 DOI: 10.1007/s11116-024-10464-x

{"title":"Eastern paradigm of urban mobility: the case of Erbil city, Iraq","authors":"","doi":"10.1007/s11116-024-10464-x","DOIUrl":"https://doi.org/10.1007/s11116-024-10464-x","url":null,"abstract":"<h3>Abstract</h3> <p>This study aims to investigate people’s behavior toward mobility system by identifying the factors contributing to car dependence in the city. Understanding whether people can change their behavior and shift toward sustainable modes is essential for shaping effective transportation policies. The research methodology comprised theoretical and experimental parts. The theoretical part was built on the concept of car dependency within the context of Middle East cities. The empirical part was based on field observations, where data on the mobility system were collected according to the survey protocol and analyzed using SPSS software. The questionnaire covered a wide range of people with different social and economic statuses. It was conducted on 385 households with 600 participants residing in Erbil City/Kurdistan Region of Iraq. The survey employed a probability sample based on a random walk survey conducted through face-to-face interviews. Final results show a statistically significant relationship between behavior change and the proposed independent variables. Empirical findings suggest that forced dependency is the pattern of the mobility system in Erbil city, and a wide range of participants was unwilling to change their behavior and shift to sustainable modes, where only 41.3% of the sample were ready to use alternative modes, such as the bus system, walking, and shared taxis, and 87.18% of all passenger journeys were made by private cars. The study concludes that the urban transportation policy of the city needs to be revised and replaced with sustainable transportation planning to fulfill the community's needs and aspirations.</p>","PeriodicalId":49419,"journal":{"name":"Transportation","volume":"1 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139728144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating demand models with more flexible elasticity functions: empirical insights from rail demand analysis 研究弹性函数更灵活的需求模型：铁路需求分析的经验启示

IF 4.3 2区工程技术

Transportation Pub Date : 2024-02-12 DOI: 10.1007/s11116-024-10462-z

Mark Wardman

{"title":"Investigating demand models with more flexible elasticity functions: empirical insights from rail demand analysis","authors":"Mark Wardman","doi":"10.1007/s11116-024-10462-z","DOIUrl":"https://doi.org/10.1007/s11116-024-10462-z","url":null,"abstract":"<p>Models of rail travel demand take one of three generic functional forms: the generalised cost (GC) function where price and the various time variables are combined into a composite term through the use of appropriate values of time; the generalised journey time and fare (GJT-Fare) approach, where the time-related variables are combined into a single term and fare remains separate; and the specification of separate elasticities for all terms, termed the separate components (SC) approach. This research extends that reported by Wardman and Toner (Transportation 47:75–108, 10.1007/s11116-017-9850-7, 2020) in exploring more flexible functional forms where appropriate parameterisation of the standard GC, GJT and SC models allows them to have more general elasticity properties. Whilst the aforementioned study discounted the standard GC approach on the grounds of inferior fit and undesirable elasticity properties, the analysis reported here, based on large datasets, finds best-fitting more flexible models to have elasticity properties that resemble those of the GC approach. Indeed, the preferred functions can deliver elasticities that are somewhat different from those of the GJT-Fare approach that has long provided the basis of official rail demand forecasts in Great Britain. In addition, the study adds to the existing evidence base by providing credible and precise elasticities for GJT and fare, and importantly for the rarely estimated GC and SC elasticities, reaffirms the need of GC models to directly estimate demand consistent values of time, and indicates that the weights currently attached to headway and interchange in formulating GJT are in need of significant amendment. Although the context is rail in Great Britain, the results have relevance to demand analysis of other modes and in other countries as well as to other transport modelling approaches.</p>","PeriodicalId":49419,"journal":{"name":"Transportation","volume":"63 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139728001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preferred streets: assessing the impact of the street environment on cycling behaviors using the geographically weighted regression 首选街道：利用地理加权回归评估街道环境对骑车行为的影响

IF 4.3 2区工程技术

Transportation Pub Date : 2024-02-03 DOI: 10.1007/s11116-024-10463-y

Bingbing Zhao, Yufan Deng, Liang Luo, Min Deng, Xuexi Yang

{"title":"Preferred streets: assessing the impact of the street environment on cycling behaviors using the geographically weighted regression","authors":"Bingbing Zhao, Yufan Deng, Liang Luo, Min Deng, Xuexi Yang","doi":"10.1007/s11116-024-10463-y","DOIUrl":"https://doi.org/10.1007/s11116-024-10463-y","url":null,"abstract":"<p>Cycling transport systems are an important way to reduce the city’s carbon emissions. Street renovation and renewal policies aim to encourage cycling transport by improving the cycling environment. However, most existing research studies the relationship between the street environment and cycling behavior from a global perspective, ignoring geospatial heterogeneity. Also, methods evaluating the cycling environment based on the frequency of cycling ignore the difference between spontaneous and necessary trips, hiding the problems that exist in streets with a high frequency of cycling. Therefore, the preferred streets index was proposed to evaluate the street cycling environment based on the difference between the cycling trajectory and the shortest path. Geographically weighted regression was used to explore the local effects of street environments on cycling behavior. The experimental results on Xiamen Island show that the type of street and the density of bicycle parking spots have a positive impact on cycling, while the effect of the availability of streetlights, availability of traffic lights, and POI density on cycling was determined by the geographic context of the street. These results provide concrete guidance for improving the cycling environment and enrich the evaluation methods for the cycling environment.</p>","PeriodicalId":49419,"journal":{"name":"Transportation","volume":"19 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139688244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Crime, environments, service characteristics, and transit ridership: a multilevel analysis 犯罪、环境、服务特点和公交乘客：多层次分析

IF 4.3 2区工程技术

Transportation Pub Date : 2024-01-20 DOI: 10.1007/s11116-023-10459-0

Jianling Li, Qian He, Qisheng Pan

引用次数: 0

Governing shared mobility: a comparison of the public policy goals being pursued in three cities 管理共享交通：比较三个城市追求的公共政策目标

IF 4.3 2区工程技术

Transportation Pub Date : 2024-01-17 DOI: 10.1007/s11116-023-10461-6

{"title":"Governing shared mobility: a comparison of the public policy goals being pursued in three cities","authors":"","doi":"10.1007/s11116-023-10461-6","DOIUrl":"https://doi.org/10.1007/s11116-023-10461-6","url":null,"abstract":"<h3>Abstract</h3> <p>Shared mobility services such as shared scooters, bikes, and ridehailing services have transformed the urban mobility landscape in recent years. In this paper we identify the goals that local governments are pursuing when regulating these private services. We also analyse the circumstances and motivations that led to the pursuit of these goals. For this, we carried out three in-depth case studies of cities where private companies had deployed shared mobility services: Bogotá, Colombia; Paris, France; and Los Angeles, USA. We found that there is a wide range of goals (34 distinct goals) that the governments of these cities are pursuing when attempting to regulate shared mobility services. However, only between three and four of these goals tend to dominate most of their actions. We also identified a mix of motivations for the pursuit of these goals: from the public interest of redressing past inequities, to circumstantial motivations such as appeasing the incumbents that have seen their businesses endangered by these new technologies. The academic literature converges on sustainability and equitable access being two of the primary goals to be pursued in transport policy, but our findings suggest that practitioners and policymakers are pursuing a range of other goals that do not fit neatly into these two theoretical categories.</p>","PeriodicalId":49419,"journal":{"name":"Transportation","volume":"20 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139489285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of the activity scheduling optimization method using real travel data 利用真实旅行数据评估活动安排优化方法

IF 4.3 2区工程技术

Transportation Pub Date : 2024-01-13 DOI: 10.1007/s11116-023-10456-3

Bladimir Toaza, Domokos Esztergár-Kiss

{"title":"Assessment of the activity scheduling optimization method using real travel data","authors":"Bladimir Toaza, Domokos Esztergár-Kiss","doi":"10.1007/s11116-023-10456-3","DOIUrl":"https://doi.org/10.1007/s11116-023-10456-3","url":null,"abstract":"<p>New mobility services are appearing with the support of technological developments. Part of them is related to activity scheduling of individuals and the optimization of their travel patterns. A novel method called Activity Chain Optimization (ACO) is an application of the Traveling Salesman Problem with Time Windows (TSP-TW) extended with additional assumptions about temporal and spatial flexibility of the activities, where the travelers can optimize the total travel time of their daily activity schedule. This paper aims to apply the ACO method and evaluate its performance using a real-world household survey dataset, where activity chains of up to 15 activities during a day are considered. The optimization is developed using the genetic algorithm (GA) metaheuristic with suitable parameters selected and the branch-and-bound exact algorithm. The findings demonstrate that the branch-and-bound solution exhibits superior performance for smaller activity chain sizes, while the GA outperforms computationally for activity chains with a size from nine. However, the GA found the solutions in only 2% of the time compared to the branch-and-bound method. By applying the ACO method, relevant time savings and emission reduction can be achieved for travelers, when realizing daily activities.</p>","PeriodicalId":49419,"journal":{"name":"Transportation","volume":"17 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139436823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advances and pitfalls in measuring transportation equity 衡量交通公平性的进展和误区

IF 4.3 2区工程技术

Transportation Pub Date : 2024-01-12 DOI: 10.1007/s11116-023-10460-7

Alex Karner, Rafael H. M. Pereira, Alex Karner

{"title":"Advances and pitfalls in measuring transportation equity","authors":"Alex Karner, Rafael H. M. Pereira, Alex Karner","doi":"10.1007/s11116-023-10460-7","DOIUrl":"https://doi.org/10.1007/s11116-023-10460-7","url":null,"abstract":"<p>Transportation systems play a pivotal role in facilitating access to out-of-home activities, enabling participation in various aspects of social life. But because of budgetary and physical limitations, they cannot provide equal access everywhere; inevitably, some locations will be better served than others. This realization gives rise to two fundamental concerns in transportation equity research and practice: (1) accessibility inequality and (2) accessibility poverty. Accessibility inequalities may rise to the level of injustice when some socioeconomic groups systematically have lower access to opportunities than others. Accessibility poverty occurs when people are unable to meet their daily needs and live a dignified and fulfilling life because of a lack of access to essential services and opportunities. In this paper, we review two of the most widely used approaches for evaluating transport justice concerns related to accessibility inequality and accessibility poverty: Gini coefficients/Lorenz curves and needs-gap/transit desert approaches, respectively. We discuss how their theoretical underpinnings are inconsistent with egalitarian and sufficientarian perspectives in transport justice and show how the underlying assumptions of these methods and their applications found in the transportation equity literature embody many previously unacknowledged limitations that severely limit their utility. We substantiate these concerns by analysing the equity impacts of Covid-19-related service cuts undertaken in Washington, D.C. during 2020. The paper also discusses how alternative methods for measuring transportation equity both better comport with the known impacts of such changes and are consistent with underlying moral concerns.</p>","PeriodicalId":49419,"journal":{"name":"Transportation","volume":"19 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139431297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Agent-based simulations of shared automated vehicle operations: reflecting travel-party size, season and day-of-week demand variations 基于代理的共享自动驾驶汽车运营模拟：反映出行方规模、季节和周日需求变化

IF 4.3 2区工程技术

Transportation Pub Date : 2024-01-10 DOI: 10.1007/s11116-023-10454-5

{"title":"Agent-based simulations of shared automated vehicle operations: reflecting travel-party size, season and day-of-week demand variations","authors":"","doi":"10.1007/s11116-023-10454-5","DOIUrl":"https://doi.org/10.1007/s11116-023-10454-5","url":null,"abstract":"<h3>Abstract</h3> <p>This paper explores the effects of day of week and season of year demand variations for shared rides, along with realistic travel party sizes, on shared autonomous vehicle (SAV) services across the Austin, Texas region. Using the agent-based POLARIS program, synthetic person-trips that reflect travel-party size (from one to four persons) and demand variations over days and months, as evident in the National Household Travel Survey data were simulated in each scenario over a 24 h travel day. Results show that realistic party sizes can bring considerable changes to SAV fleet performance, including up to 8.5% higher service rates (number of requests accepted within 15 min), 5 min shorter journey times (wait time + travel time), 28% higher vehicle occupancies on weekends, and roughly 4% lower empty fleet VMT. Weekend travel is most impacted by season of year, with weekday travel patterns looking more uniform (thanks to work and school trips). Various performance metrics for the Austin network, like total and empty VMT, change by up to 30% when considering realistic variations in party size and time of year. This paper underscores the value of recognizing day-to-day and month-to-month variations in travel demand, and the importance of agent-based model equations to reflect travel-party size. Such realism can help quantify SAV seat occupancies more accurately, highlighting the importance of shared mobility. However, it also creates demand and supply issues for operators that now need more information on party size to manage dynamic ride-sharing, or those that may wish to shift their fleet vehicles to other regions for special events to protect profits while offering reasonable wait times to customers throughout the year.</p>","PeriodicalId":49419,"journal":{"name":"Transportation","volume":"148 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139407759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction: Operating subsidies and transit efficiency: applying new metrics to old problems 更正：运营补贴与公交效率：用新指标解决老问题

IF 4.3 2区工程技术

Transportation Pub Date : 2023-12-30 DOI: 10.1007/s11116-023-10458-1

Christina D. Funk, Michael J. Higgins, G. Newmark

引用次数: 0