Long Cheng

Southeast University | SEU · School of Transportation

As global demographics tilt toward an aging populace, walking’s role in promoting senior health and social engagement is becoming paramount. However, few studies focus on walking activity among older adults in mountainous cities, and the influence of mountainous terrains on older adults’ walking patterns remains unknown. This study bridges this inf...

While previous studies have provided insights into the relationship between weather and ridership, how historical and future weather conditions affect bus travel behavior remains to be addressed. And the differences among advancing, current, and lagging effects, between different traveler profiles are not clear. This research aims to fill the gaps...

Introduction: The issue of population aging is increasingly prominent, presenting unprecedented challenges and pressures on urban medical resources. The equity and convenience of medical services for older adults have emerged as critical concerns for urban planners. While previous research on medical accessibility for older adults has yielded fruit...

Understanding the factors influencing ride-sourcing trips is crucial for enhancing the quality of personalized mobility and optimizing the allocation of transportation system resources. However, the nonlinear effects of dockless bike-sharing (DBS) and the built environment (BE) across different spatiotemporal contexts have not been adequately addre...

During peak hours, major urban rail transit lines often face severe station overcrowding, leading to operational risks and diminished passenger experience. To evaluate the effectiveness of Transit Reservation Strategies (TRS) on congested lines and explore a scientifically TRS implementation scenarios. This study introduces multiple reservation sce...

This study develops a novel theoretical framework to explore the different paths of basic needs and advanced needs on users’ ridesharing intention and ridesharing behavior. Employing partial least squares structural equation modeling and multi-group analysis, questionnaire responses from 1044 users in China were empirically evaluated. The results s...

Transit-Oriented Development (TOD), a sustainable urban development strategy emphasizing integration between transportation and land-use planning centered around public transportation hubs, is increasingly employed around High-Speed Rail (HSR) stations. Despite this trend, there is a lack of quantitative evaluation on factors affecting TOD levels a...

In many cities, bike sharing systems, including station-based bike sharing (SBBS) and dockless bike sharing (DBS), are gaining popularity rapidly. Bike rebalancing is one of the most expensive aspects of bike sharing operations, and it takes several hours. In terms of reducing the inefficiencies of frequent short-term bike reba-lancing, whether bik...

Air-rail intermodal services (ARISs) represent a highly promising multimodal solution within the transportation sector. Nonetheless, various uncertainties and challenges persist across multiple dimensions of air-rail interline travel, with discrepancies in passenger perceptions being a notable aspect. In an effort to pinpoint the pivotal factors co...

App-based carpooling is recognized as a solution for sustainable commuting. However, there is currently no widespread acceptance and adoption of app-based carpooling services among urban commuters. The study aims to predict residents’ intention to use app-based carpooling services for commuting trips based on the extended Technology Acceptance Mode...

In some mega cities, metro lines often experience severe congestion during peak hours, posing serious operational risks. To alleviate passenger delay and address overcrowded conditions, this study proposes a novel model for metro travel reservation and carriage reserved capacity. The model comprises three components: off-station queuing restriction...

Ridesplitting has great potential to alleviate the negative impacts of ridesourcing on the environment. However, the actual trip-level environmental impact of ridesplitting and its determinants remain unclear. To bridge this gap, this study reveals what determines the real-world CO2 emission reductions of ridesplitting trips based on the observed d...

As population aging has been an issue worldwide, the mobility of older people have attracted the attention of scholars from urban planning, transport geography, and social science. However, few have investigated socio-spatial differentiation among mobility groups, considering their daily needs and activity spaces. To fill this research gap, we cond...

Understanding the travel behaviour of transport hub users is vital for improving transport services. Although previous research has explored passenger behaviour in and around transport hubs, there is a lack of comprehensive studies on travel patterns within hub station areas. To this end, this study harnessed mobile phone data to analyse the travel...

Service bottlenecks are a key barrier to building a resilient public transport system. In this paper, we propose a new approach to automatically extract the role of a station in dynamical public transport flow networks based on the emerging role discovery method in network science. The term "role" in this study refers to the distinctive position or...

This study proposes an integrated theoretical framework to comprehensively examine the satisfaction and subjective well-being of ridesourcing travelers. A total of 1370 survey responses from China were empirically examined, using partial least squares structural equation modeling and multigroup comparison methods. The findings show that platform sa...

In recent years, inter-city coach (ICC) services have seen a gradual decline in passenger volumes due to various external influences. Typically, ICC companies respond to this situation by reducing the frequency of their services. However, this reduction in frequency can affect passenger choice, potentially leading to an even further decrease in vol...

Shared autonomous vehicles (SAVs) have potential benefits for the society and environment. This study constructs a novel framework to investigate the combined effects of the external environment and personal attributes on SAVs adoption. Using questionnaire data from 669 Chinese consumers, a range of methods, including partial least squares structur...

COVID-19 has imposed significant changes to the daily routines of urban residents, significantly impacting travel behaviors. Visually impaired people are a disadvantaged group in transportation, and may be more vulnerable to disproportionate impacts due to COVID-19. This study explores the travel behavior of visually impaired people before and duri...

The rapid growth of urban transportation has led to increased pressure on transportation infrastructure in many urban areas. In this paper, we examine the relationship between urban travel time and decision-making on the spatial mobility of the labor force to optimize the labor space distribution pattern. Using Gaode map traffic congestion delay da...

In recent years, a growing number of cities worldwide have implemented docked bike sharing (DBS) systems. One of the most important features to the success of a DBS scheme is the deployment of the stations. However, prior studies on locating DBS stations have focused on travel demand while accessibility factors received limited attention. To tackle...

Extracting flow clusters consisting of many similar origin–destination (OD) trips is essential to uncover the spatio-temporal interactions and mobility patterns in the free-floating bike sharing (FFBS) system. However, due to occlusion and display clutter issues, efforts to identify inhomogeneous flow clusters from large journey data have been hamp...

The integration of public bicycles with tube systems has the potential to enhance urban transportation sustainability and efficiency. However, the utilization of public bicycles can significantly differ among various docking stations, even when they fall within the coverage area of the same tube station. Understanding the factors that attract or di...

This Research Topic was initiated in July 2022. It is supported by four Frontiers journals: Frontiers in Public Health, Frontiers in Ecology and Evolution, Frontiers in Environmental Science, and Frontiers in Sociology. It serves as a platform for disseminating the latest insights and discoveries in the realm of the physical environment and human h...

Ridesourcing has undergone a magnificent development pre pandemic and has had a transformative impact on travel behavior and urban mobility. While an individual's travel behavior has been found to be inevitably influenced by the pandemic, how COVID-19 influences the utilization of ridesourcing has rarely been discussed in previous studies. Understa...

under review

This paper proposes a novel analytical framework that integrates spatial statistics and machine learning techniques to identify relationships between e-commerce and distribution facilities. The framework includes centrographic analysis, global and local spatial association measurements, and a recently popularized interpretable machine learning appr...

Ridesharing is a shared mobility service in which passengers and drivers with similar origins and destinations are matched to travel in the same vehicle. This service utilises unused seats in vehicles and multi-passenger rides to reduce the cost of travel. To promote ridesharing, both service providers and policymakers should carefully analyse pass...

As the population worldwide continues to age, providing improved mobility services for older people becomes increasingly crucial. In recent years, the maturation of bike sharing has led older people to progressively incorporate it into their everyday lives. In this study, station-based bike sharing (SBBS) and dockless bike sharing (DBS) are investi...

Accurate recognition of driver behaviours is the basis for a reliable driver assistance system. This paper proposes a novel fusion framework for driver behaviour recognition that utilises the traffic scene and driver gaze information. The proposed framework is based on the graph neural network (GNN) and contains three modules, namely, the gaze anal...

Car-dominated daily travel has caused many severe and urgent urban problems across the world, and such travel patterns have been found to be related to the built environment. However, few existing studies have uncovered the nonlinear relationship between the built environment and car dependency using a machine learning method, thus failing to provi...

Transit-oriented development (TOD) is an urban designed model aimed at attracting more sustainable travellers. However, not all TOD projects succeed in maintaining a high rate of sustainable travel behaviour. To examine the impacts of TOD on residents’ travel behaviour, this paper applies binary logistic regression to analyse survey data for 1,298...

The transfer city is a key point in air-to-rail intermodal travel (ARIT) that directly influences the service level of the entire system. Although some studies have investigated factors that influence passengers’ ARIT preferences based on subjective surveys, an in-depth understanding of their nonlinear and interactive impacts on passengers’ actual...

Logistics outsourcing is a practice commonly used by firms to allow them to access capabilities that they lack internally. Although the main drivers of outsourcing in general are fairly well known, the question of what explains logistics outsourcing decisions within the UK pharmaceutical manufacturing industry, in particular, remains under-research...

The Carbon Generalized System of Preferences (CGSP) is an innovative incentive mechanism implemented by the Chinese government to calculate and reward the public's low-carbon behaviors. To identify the factors influencing the public's willingness to participate in the CGSP, this study constructs a novel theoretical framework by integrating personal...

Studies on fatal crashes involving large trucks are typically focused on the examination of injury severity at the personal level rather than the crash level. In this study, instead of adopting the predefined, commonly used rule of transformation of individual injury severity to crash level severity, we develop a data specific transformation approa...

Over the past two decades, transportation engineers and urban planners have become increasingly interested in using performance measures to capture roadway infrastructure effects on bicyclists' comfort levels. In this study, a tool is developed for evaluating Ohio's local roads and identifying opportunities for improvement. This begins by assessing...

Journal: Frontiers in Future Transportation------ Multimodal transport hubs are of great importance for inter-/intra-city mobility and the movement towards seamless travel. They can help to form a coordinated transport network and enhance the integration of different transport modes. It has been pointed out in the Transportation Research Record th...

Post-suburbanization, shifting the focus of urban spatial development to its periphery, is becoming a global policy concern. Changing urban form affects travel behavior, where the traditional suburb-to-CBD commuting pattern has been contested by inter-suburban commuting. This empirical study investigates how employment decentralization and its asso...

Passengers’ perceptions play an important role in the evaluation of transfer efficiency for a transportation hub. However, there are many ways to transfer between hubs and urban traffic, and passengers who use different transfer modes may have different perceptions of the same hub. This paper adopts a case study of the Nanjing South Comprehensive T...

Free-floating bike sharing (FFBS) programs have been put into use in many cities around the world in an effort to provide travel convenience for local inhabitants. However, it is unclear whether the existing administrative subdivisions reflect the most plausible spatial structure for the daily movements of FFBS users. In this study, we first build...

Since the outbreak of COVID-19, it has rapidly evolved into a sudden and major public health emergency globally. With the variants of COVID-19, the difficulty of pandemic control continues to increase, which has brought significant costs to the society. The existing pandemic control zoning method ignores the impact on residents'lives. In this study...

Although ridesourcing has served as an emerging feeder mode to the metro system to solve the first/last-mile issue, research on metro-integrated ridesourcing usage is rather limited. This paper applies a gradient boosting decision tree (GBDT) method to investigate the nonlinear relationship between the built environment and metro-originated and met...

Bike-sharing offers a convenient feeder mode for connecting to public transport, which helps to address the last-mile problem. However, few studies have examined the nuanced relationship between the built environment and the integration of free-floating bike-sharing (FFBS) with urban rail transport (URT). Drawing on weekly records of 3.12 million t...

This study constructs a novel theoretical framework to uncover the effects of government regulation , carbon-emission reduction certification and information publicity on people's carpooling behavior. Survey data on 1056 potential users from China were empirically examined using partial least squares structural equation modeling and multigroup anal...

Although many studies have revealed the relationship between the built environment and active travel among older adults, limited studies offer insights into gender differences. Using data from Chiba (Japan), this study employs a random forest method to fill this gap by revealing the non-linear associations of the built environment with active trave...

As a new form of shared mobility similar to bike-sharing, there is an increasing trend of people starting to use shared electric bicycles (SEB) for travel in China. Understanding the psychosocial factors that affect residents’ intention to use SEB is essential for the implementation of policies to develop sustainable transportation. Most research f...

Station-based bike sharing (SBBS) not only provides commuters with direct “door-to-door” trips, but also plays a vital role in addressing the “first/last mile” challenges for public transportation system. However, there is a lack of research into portraying year-to-year changes in SBBS commuter behaviors. With five-year (from 2016 to 2020) SBBS sma...

Dockless bike sharing (DBS) has the free-floating feature and large-scale fleet, which poses significant challenges to repositioning. This paper finds the Matthew mechanism of bike floating based on real-world trip data in Nanjing, China, and then proposes an integrated method for the large-scale DBS repositioning problem. Firstly, trip origins are...

Demographic ageing in most countries around the world is significant. Japan, the most ageing country in the world, is expected to reach an ageing rate of over 40% by 2055. A better understanding of the daily mobility patterns of older people is fundamental for an ageing society to meet the needs of their daily life. Active travel (cycling and walki...

Bikeshare offers a flexible feeder mode to metro and improves the overall connectivity of urban public transport systems. Although bikeshare has received much research attention, the relationship between the built environment and bikeshare-metro integrated use (i.e. the use of bikeshare for the first/last mile) remains underexplored. Using a one-mo...

Introduction Increasing attention has been paid to accessibility and equity during the last two decades. Yet, despite the proliferation of studies investigating accessibility and equity from the perspective of the younger generation, only modest progress has been made in embedding a temporal perspective and targeting health services for older adult...

Accessibility equity is a critical factor in developing equitable and sustainable communities. Although numerous studies have analyzed accessibility inequity, few of them examined inter-group and intra-group inequity and made comparisons between private cars and public transit. In this paper, a Gaussian-based Two-step Floating Catchment Area method...

Dynamic ride-sharing has been widely regarded as a potential way to alleviate traffic congestion and reduce environmental pollution. Prior studies have focused mainly on motivating consumers to adopt ride-sharing, but few have attempted to investigate continuance intention. This study constructs a comprehensive theoretical framework based on expect...

Air and high-speed rail (HSR) intermodal service (AHIS) breaks through the barriers of aviation and HSR, which builds a modern integrated transportation system. However, this system also poses a challenge to operators to provide satisfactory travel services for passengers. This paper aims to identify the service indicators that influence travelers'...

Although numerous studies have been conducted to analyze the relationship between public transit accessibility and housing prices, they often assumed a linear relationship. Using a dataset of 196,232 s-hand residential properties in Shanghai (China), this study applies the gradient boosting regression trees (GBRT) method to investigate the complica...

This study analyzes the relation between shared mobility services and greenhouse gases (GHGs) emissions by using a nationally representative sample of US young adults. We conduct a comprehensive analysis based on the data collected in the 2017 National Household Travel Survey (NHTS). These trip-level emissions are calculated following MOtor Vehicle...