Formation Mechanism of Traffic Congestion in View of Spatio-temporal Agglomeration of Residents’ Daily Activities:A Case Study of Guangzhou
Received date: 2011-11-14
Request revised date: 2012-01-12
Online published: 2012-06-04
Copyright
With the rapid spread and expansion of big cities, the increasing of traffic congestion is one of the main problems in the process of urban development, which becomes a hot research topic. With the time geography method, this article discusses the formation mechanism of traffic congestion under the perspective of spatio-temporal agglomeration of residents’ daily activities with a case of Guangzhou. The results show that, motile co-existence is the root cause of traffic congestion, while the agglomeration of spatio-temporal paths cause motile co-existence. Guangzhou residents’ activities are conditioned by space and time constraints, which forms the motile co-existence. The urban space and road structure enhance the agglomeration of spatio-temporal paths, so as to form the coexistence of daily activities and traffic congestion. Therefore, path cluster is the fundamental cause of traffic congestion under the constraints of time and space. In conclusion, residents’ daily activities are constrained by time and space, when the constraint reaches to a certain degree, the spatio-temporal agglomeration and motile co-existence will be produced, and finally forms traffic congestion. Good traffic management can only make traffic congestion tend to get better but cannot solve the problem of traffic congestion in essence. The structure of urban space, traffic lines, traffic control, and the situation of transportation supply and demand in some degree affect traffic congestion through motile co-existence. With the situation of transportation supply and demand at a roughly balanced level, the basic measures to solve the problem of traffic congestion lies in resolving the agglomeration of residents’ daily activities.
GU Jie , ZHOU Su-hong , YAN Xiao-pei , DENG Li-fang . Formation Mechanism of Traffic Congestion in View of Spatio-temporal Agglomeration of Residents’ Daily Activities:A Case Study of Guangzhou[J]. SCIENTIA GEOGRAPHICA SINICA, 2012 , 32(8) : 921 -927 . DOI: 10.13249/j.cnki.sgs.2012.08.921
Fig. 1 Lorenz Curve of residents’ daily travel in Guangzhou图1 广州市居民日常出行时间的洛伦茨曲线 |
Table 1 Investigation place and numbers of daily travel表1 问卷调查点及居民出行次数 |
调查地点 | 问卷 数目(份) | 日出行次数 (次) | 调查地点 | 问卷 数目 | 日出行次数 | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|
2 | 3 | 4 | >4 | 2 | 3 | 4 | >4 | ||||
中山六路 | 75 | 42 | 0 | 26 | 7 | 冼村 | 80 | 56 | 6 | 13 | 5 |
龙津西路 | 78 | 1 | 2 | 39 | 36 | 建设新村 | 80 | 37 | 3 | 29 | 11 |
东晓路 | 79 | 65 | 4 | 9 | 1 | 中大西区 | 78 | 25 | 1 | 41 | 11 |
天河东路 | 78 | 44 | 1 | 26 | 7 | 同德围 | 79 | 46 | 4 | 24 | 5 |
员村 | 79 | 26 | 1 | 45 | 7 | 华南新城 | 79 | 66 | 9 | 3 | 1 |
棠下 | 197 | 119 | 15 | 53 | 10 | 总计 | 982 | 527 | 46 | 308 | 101 |
Fig.2 Population density at 5:00 and 10:30图2 时间断面人口密度特征 |
Fig.3 The space-time paths of daily travel of a sample in Guangzhou图3 广州市居民日常活动的时空路径 |
Fig. 4 Population distribution of unit road in travel peak time图4 出行高峰时段人口在单位路段上的分布 |
Fig. 5 Four basic patters of spatio-temporal coexistence图5 时空共存的四种基本变形 |
The authors have declared that no competing interests exist.
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