With the rapid development of mobile internet technology and increasing social concern for transportation equity, shared mobility, as an emerging travel mode, is becoming an essential supplement to public transportation, and its equity is receiving more and more attention from the academic community. Based on the concept of shared mobility, the existing research on the equity of shared mobility is summarized and analyzed from three dimensions, i. e., concepts and research methods, problems and influencing factors, and optimization strategies. The results show that the future domestic research needs to strengthen discussion on localized theory of equity of shared mobility, deepen the exploration of influencing mechanism on vertical inequity in shared mobility, and further enrich the research perspectives on optimization strategies to provide research support for improving the unbalanced and insufficient development of shared mobility.

Metro plays a crucial role in the public transportation system of big cities. Research on metro accessibility is essential to reduce traffic congestion and enhance the overall happiness of local residents. Related fields have long been interested in the correlation between metro accessibility and life satisfaction. This review provides an overview of the methods used to measure metro accessibility and examines how metro accessibility directly and indirectly influences life satisfaction. By means of the theories of behavioral geography and urban planning, this study establishes a framework for how metro accessibility affects life satisfaction via space-time behavior. It emphasizes how daily activity and travel behavior are related to metro accessibility and life satisfaction at a micro-individual level, so as to provide a research basis for the follow-up study.

This article is based on the measurement and differentiation of fairness in urban public transportation accessibility, and provides an in-depth review of domestic and foreign research from three aspects:measurement of accessibility and public transportation accessibility, measurement of fairness in public transportation accessibility, and differentiation of fairness in public transportation accessibility. Research has found that most research results focus on the analysis of public transportation accessibility, and generally pay attention to the evaluation of public transportation distribution fairness and its correlation with travel behavior. The research methods for measuring the fairness of urban public transportation accessibility have become increasingly refined, and theoretically, more emphasis has been placed on the close combination of fair supply and demand of public transportation, as well as the group differences in the impact of public transportation accessibility on resident travel.

Studies have generally recognized the close relationship between physical activity and health and the important role of neighborhood environment. However, there are still few reviews on the relationship among neighborhood environment, physical activity and health, especially on leisure time physical activity. Therefore, this study first sorts out the relationship among neighborhood environment, leisure time physical activity and health, and constructs an analytic framework of the review. Secondly, it addresses the different mechanisms of objective built environment, subjective environment and social environment, and sorts out and comments on the literature from two angles:the neighborhood environment impact on leisure physical activity and the intermediary effect of leisure physical activity on residents' health. Finally, the research points out that future study should pay more attention to the comprehensive influence mechanism of different dimensions of neighborhood environment, explore the differences of different types of physical activities from the behavior perspective, focus on exploring the influence mechanism of "neighborhood environment-physical activity-health", and pay attention to methodological issues such as uncertain geographic context problem(UGCoP) and new technologies and methods of data acquisition and analysis.

This study reviews the methods of measuring and assessing walking environments, which are classified into two categories:objective method and subjective method. The objective method is mainly based on GIS technology and data to measure neighborhood walkability at a meso or macro urban scale, which is relatively weak in measuring micro walking environment. The subjective method is mainly based on questionnaire scales and on-site participatory approaches to assess the walking environment at meso and micro scales, focusing on the pedestrian's subjective perception of the objective built environment, and considering the impact of individual walking ability, walking preference, and socio-economic attributes. With the rise and application of 3D GIS models, street view image data, and machine learning methods, objective methods have shifted from two-dimensional walkability measurement to three-dimensional measurement. Meanwhile, the research scale has also shifted from macro-scale to micro-scale, concentrating more on people and considering more refined walking environment elements that meet visual aesthetic needs from a human-oriented perspective. The subjective method turns to combine new technologies and methods such as machine learning, big data algorithm, virtual reality technology, and wearable physiological sensors to obtain the pedestrian's subjective perception of the walking environment. In the end, we propose future research trends and prospect the measurement and assessment of urban walking environments in China in the context of a humanoriented turn.

Customized buses can achieve an accurate match between travel demands and responsive travel service supply to meet the emerging travel requirements of flexibility and carbon reduction. However, sustainable development of customized bus systems and routes still faces many problems. By analyzing the relevant literature in the past decade, this paper compares the hot spots and trends of customized buses, summarizes the common problems of existing research, and forecasts the important future research directions. Equity plays a crucial role in the sustainable development of customized bus service systems, and existing route planning studies have begun to focus on the equity for disadvantaged groups and spatial equilibrium. Future research should focus on addressing the establishment of a fairness evaluation index system, systematic consideration of route planning and scheduling operations under fairness constraints, etc. Customized bus system planning must take into account the design of new passenger fare discounts and loyalist benefits, and sustain efforts at all stages of demand evolution to improve the sustainability and survival rate of customized bus routes and systems.

As an important part of social equity, transportation equity provides a foundation and guarantee for promoting urban sustainable development. Exploring ways to identify urban transpotation equity can help optimize the layout of urban traffic, improve traffic policies and regulations, narrow the accessibility differences among travel groups, and create a equity travel environment. On the basis of sorting out the connotation of urban transportation equity, this study summarizes the index system and technical methods of urban transportation equity identification from the dimensions of horizontal transportation equity and vertical transportation equity, focusing on cost and benefit, transportation resource allocation, transportation service quality, accessibility and transportation policy. At the same time, it puts forward a framework system to identify urban transportation equity, which mainly includes crowd division, index determination, data collection and recognition, and further defines the technical process of transportation equity identification and modeling method in order to provide reference for relevant practice research of urban transportation equity identification.

With chronic non communicable diseases becoming the main disease burden and cause of death for Chinese residents, shaping a built environment to reduce obesity through spatial strategies has become a new task for urban and rural planning to guide healthy lifestyles. This article is based on relevant literature on the impact of built environment on obesity among residents in the past 20 years. It provides an overview of the impact of built environment on obesity among residents, summarizes the long-term chain impact of built environment on obesity among residents, and highlights the factors of built environment that researchers are most concerned about; On the basis of empirical research results, relevant policies and practical explorations to promote physical activity and healthy diet were sorted out, and challenges such as strengthening food environment research, emphasizing the regulatory role of corresponding mechanisms of socio-economic attributes, and emphasizing the mediating role of perceived built environment were pointed out, in order to provide international experience for promoting healthy city construction.