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摘要: 分析了快速城市化地区中等城市的交通流时空分布特性, 基于2008年东莞市区综合交通规划交通流量调查数据, 研究了交通量车种构成、时间分布特性、空间分布特性及现状路网特征, 采用TransCAD交通规划软件对路网交通负荷度进行了综合评价, 分析了东莞市区现状交通问题, 提出了具有针对性的交通发展策略。分析结果表明: 该类城市小汽车出行比例高, 公共交通发展滞后; 交通基础设施严重不足; 出入口客货混行及过境交通现象严重; 路网结构不完善, 道路功能不明确。提出了完善道路网络系统, 优化城市交通结构, 构建高效公共交通体系, 规范交通管理, 土地利用与交通协调发展等政策措施。Abstract: In order to analyze the traffic flow space-time distribution characteristics of medium city in fast urbanization area, vehicle class composition, the temporal and spatial distribution characteristics of traffic flow, and road network characteristics were statistically studied based on the traffic flow survey data of comprehensive transportation planning for Dongguan in 2008. The traffic load of base road network was comprehensively evaluated by using traffic planning software TransCAD.The current traffic situation in Dongguan was anatomized. The traffic development strategies of medium city were put forward. Analysis result indicates that the trip proportion of car is very high, the development of public transportation lags behind, transport infrastructure has a serious shortage, the mixed running phenomenon of passenger-freight traffic and transit traffic is serious in access points, road network structure is defective, and road function is not clear in medium city. Traffic strategies are suggested, including improving road network system, optimizing the structure of urban traffic, building efficient public transport system, regulating traffic management, and coordinating transportation and land use.
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Key words:
- fast urbanization /
- medium city /
- traffic characteristic /
- traffic development strategy
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图 11 市域范围内境内外交通空间分布
Figure 11. Spatial distribution of internal and external traffics in region scope
图 12 现状路网高峰小时流量与饱和度
Figure 12. Peak hour volumes and saturations of current road network
表 1 交叉口高峰小时流量及饱和度
Table 1. Peak hour volumes and saturations of intersections
编号 交叉口名称 高峰小时流量/(pcu·h-1) 饱和度 101 万高路—莞穗大道 6 999 0.860 102 创业路—莞太大道 6 580 0.975 103 体育路—莞太大道 6 339 0.805 104 金牛路—南城路 5 549 0.791 105 旗峰路—东城大道 6 472 0.836 106 旗峰路—东城西路 6 282 0.792 107 东纵大道—罗沙路 5 227 0.625 108 学院路—东兴路 5 283 0.808 109 东纵大道—东城西路 6 605 0.779 110 学院路—东城中路 5 317 0.637 111 东纵大道—东城中路 6 753 0.755 112 东城大道—东城中路 6 312 0.735 113 东城南路—东城中路 4 777 0.756 114 旗峰路—东莞大道 7 949 0.906 115 学院路—东宝路 6 425 0.879 116 迎宾路—东城东路 4 858 0.612 117 鸿福路—莞太大道 7 193 0.799 118 鸿福路—胜和路 6 135 0.793 119 石竹路—鸿福路 3 385 0.454 120 石竹路—体育路 4 726 0.697 121 鸿福路—东莞大道 7 752 0.801 
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表 2 路网高峰小时服务水平
Table 2. Service levels of road network in peak hour
服务水平 饱和度 所占比例/% 交通状态描述 A < 0.40 8 畅行车流, 基本上无延误 B 0.40~0.60 18 稳定车流, 有少量的延误 C 0.60~0.75 27 稳定车流, 有一定的延误, 但驾驶人可以接受 D 0.75~0.90 26 接近不稳定车流, 有较大延误, 但驾驶人还能忍受 E 0.90~1.00 17 不稳定车流, 交通拥挤, 延误很大, 驾驶人无法忍受 F > 1.00 4 强制车流, 交通严重堵塞, 车辆时停时开
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