杭州主城区公交停靠站评估及优化策略研究
Conference proceedings talk, 城市规划年会, 重庆, 中国
摘要：通过构建多维度的评价体系，以问题评估为抓手，以出行需求为导向，突出“以人为本”，围绕年度治堵目标和公交都市创建目标，结合公交线网优化，从着力扩大公交站点服务覆盖面、加强与既有轨道车站衔接、提升运行效率、提高服务能力等方面着手，进一步优化完善常规公交停靠站，改善公交服务效率，增强公交出行吸引力，提升大公交系统综合效益。
Talks and presentations
城市居民步行出行特征分析与对比——以南京为例
Conference proceedings talk, 城市规划年会, 东莞, 中国
摘要：步行是城市居民重要的出行方式，在居民生活中发挥着重要的作用，在城市交通系统中也扮演着重要的角色。尽管步行交通的研究日益受到重视，但目前国内对步行出行行为的分析还比较缺乏。本次研究使用南京市居民出行调查数据，对城市居民的步行出行特征进行定量分析，研究城市中步行出行的比例、目的、时间、时耗、距离等。从上述步行出行特征中选取两个重要的指标，即步行出行率和步行出行时耗，进一步加入多个城市的数据，分别与建成区面积进行对比和函数拟合，研究建成区面积对步行出行特征的影响。最终分析了上述研究对于步行规划的启示并对步行调查中的数据问题进行了探讨。
An Indicator-based Method for Bus Routing Adjustment
Conference proceedings talk, International Conference on Green Intelligent Transportation System and Safety, Changchun, China
摘要： Increasing the ridership of bus transit through bus routing adjustment is one of the main tasks of transit agencies. A new method to characterize and classify bus routes according to their coverage, transfer and overlap level in meeting the needs of public transit planning is described. Geographic transit network and land use data are used to calculate seven indicators for each bus route: residential area coverage, non-residential area coverage, land use mix, transfer index to/from bus, overlap index with bus, transfer index to/from metro and overlap index with metro. Hierarchical clustering analysis is used to indicate where the largest potential scope exists for adjusting the bus transit system and hence can be used to guide transit planners. The method was applied in Nanjing, China aiming to identify improvable bus routes. Six bus route clusters were generated using hierarchical clustering. The profiles of each cluster are analyzed and corresponding strategies for bus routing adjustment are proposed. ANOVA test shows there is significant difference at the route level ridership among these clusters, which verifies the reasonability of the method.
An Analysis of Metro Peak-Hour Boarding and Alighting in Hangzhou, China
Conference proceedings talk, 94st TRB annual meeting, Washington D.C., US
摘要：While most previous studies of transit usage were conducted for either the average daily ridership or the average daily boarding, this study focused on metro peak-hour boarding and alighting, which were crucial for the design of stations and intermodal connection facilities. After analyzing the range of pedestrian catchment area (PCA) and the factors influencing metro usage, the related data were collected by observation and Geographic Information System (GIS). The Pearson correlation analysis was used to test correlation between factors and metro usage and multi-collinearity. Then three partial least squares (PLS) regression models were developed to explain the relationships of weekday ridership, peak-hour boarding and alighting with the factors at 31 metro stations in Hangzhou. The results showed that 9, 12 and 11 independent variables were important to explain the 3 dependent variables respectively, with the variable importance for projection (VIP) greater than 1.0. The results not only confirm some findings from previous studies but also demonstrate distinct differences regarding some variables specific to the Chinese context. Additionally, the differences of importance in some variables by differentiating the time period are discovered in this study.
The Pedestrian and Cycling Planning in a Medium-sized City
Conference proceedings talk, International Conference on Low-carbon Transportation, Logistics, and Green Buildings Proceedings, Beijing, China
摘要：Walking and cycling are important component in the urban transportation, residents’life and leisure activities, especially in the medium and small cities.Improving the pedestrian and cycling environment is important, and the pedestrian and cycling planning plays an important role in the process. A pedestrian and cycling planning is introduced in this paper, taking Xuancheng, a medium-sized city as an example. Basing on the analysis of the existing conditions and issues of walking and cycling in Xuancheng, and considering the requirement of residents and the visions of upper level plannings,the planning goals including safety, priority and vibrancy are proposed as well as five objects to support these goals. Then, the planning strategies and actions including structure planning, differentiation district control, important district improvement, public transit access and advanced design guidelines are introduced in detail. At last, some suggestions are given to the planning implementation and management.
Building the Walkable City in China: Challenges and Plannings
Conference proceedings talk, 91st TRB annual meeting, Washington D.C., US
摘要：In the past two decades, China has been experiencing rapid urbanization and motorization. Issues of traffic congestion, air pollution and walking safety caused by urbanization and motorization greatly damage the welfare of pedestrians. The auto-centric concept and the neglect of walking during planning also bring up a number of challenges for pedestrians. This paper outlines the important challenges of walking. The efforts made by Chinese national and city governments to deal with these challenges are then presented. The pedestrian master plan plays an important role in the plan-to-project delivery process. Therefore, this paper closes by introducing the framework and main contents of the pedestrian master plan and discussing problems associated with it, including the lack of data, inadequate attention to walking-transit connection and enforcement and education, and lack of public participation. They point to several promising approaches to improving the pedestrian master plan and strengthening governments’ responsibilities to improve the pedestrian environment. Additionally, this work can be a useful reference to understand the challenges and problems during building a walkable city, in a rapidly growing, urbanizing and motorizing society.