在全面推广高速公路差异化收费背景下,针对如何选取差异化收费路段的问题,建立一种基于多源数据的差异化收费路段识别方法.首先,基于高速公路门架数据、收费站出入口流量、普通国省道交通流量自动观测站数据等多源数据,从路段沿线社会经济发展水平、网络化水平、交通运行特征、交通可转移性、交通负荷均衡性5个维度,构建高速公路差异化收费路段识别指标体系.然后,基于k-means聚类和分类回归树算法(Classification and Regression Trees,CART)建立高速公路差异化收费路段识别模型.最后,以云南省130条高速公路路段为例,提取高速公路差异化收费路段细分规则及关键特征指标.研究结果表明:影响高速公路差异化收费路段细分的关键特征指标分别为路段成网率、收费站节点度、出行成本偏差率、路段全天小时拥挤度、可替代路径数量;根据决策树细分规则可将差异化收费路段划分为差异化上浮型、不适合差异化、差异化下浮型3种,符合高速公路实际收费运营情况.
Identification of differentiated toll sections on expressways using multi-source data
In the context of the widespread implementation of differentiated tolls on expressways, a method for identifying differentiated toll sections using multi-source data is developed. Firstly, an indi-cator system for identifying these sections is established based on data from expressway gantries, toll station entrance and exit flows, and automatic traffic flow observation stations on national and provincial roads. This indicator system is constructed across 5 dimensions: the level of socio-economic development around the expressway section, the degree of network integration, traffic operation char-acteristics, traffic transferability, and traffic load balance. Then, a model for identifying differentiated toll sections on expressways is developed using the k-means clustering and Classification and Regression Trees (CART) algorithms. Lastly, the segmentation rules and key characteristic indicators of differentiated toll sections are derived from an empirical study of 130 expressway sections in Yunnan Province. The re-search findings reveal that the key characteristic indicators influencing the segmentation of differentiated toll sections include the network density of expressway sections, the node degree of toll stations, the deviation rate of travel costs, the hourly congestion level of road sections throughout the day, and the number of al-ternative routes. According to the decision tree segmentation rules, differentiated toll sections can be classi-fied into 3 types: upward differentiated, unsuitable for differentiation, and downward differentiated, which align with the real-world toll operational situations of expressways.
transport economicsexpresswaydifferential toll sectionscluster analysismulti-source data
万方数据
维普
