Macroscopic basic characteristics of a road network under the influence of traffic generation and attraction source agglomeration

Heng Ding; Jing-Wen Zhou; Xiao-Yan Zheng; Hai-Jian Bai; Wei-Hua Zhang

doi:10.7498/aps.69.20191641

Journals >Acta Physica Sinica >Volume 69 >Issue 7 >Page 074502-1 > Article

Acta Physica Sinica
Vol. 69, Issue 7, 074502-1 (2020)

Macroscopic basic characteristics of a road network under the influence of traffic generation and attraction source agglomeration

Heng Ding, Jing-Wen Zhou, Xiao-Yan Zheng^*, Hai-Jian Bai, and Wei-Hua Zhang

Author Affiliations

School of Automobile and Traffic Engineering, Hefei University of Technology, Hefei 230009, China

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DOI: 10.7498/aps.69.20191641 Cite this Article

Heng Ding, Jing-Wen Zhou, Xiao-Yan Zheng, Hai-Jian Bai, Wei-Hua Zhang. Macroscopic basic characteristics of a road network under the influence of traffic generation and attraction source agglomeration[J]. Acta Physica Sinica, 2020, 69(7): 074502-1 Copy Citation Text

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Fig. 1. MFD: (a) Basic characteristics of MFD; (b) state classification of MFD curve.

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Fig. 2. Simulation road network.

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Fig. 3. Traffic density distribution under different traffic generation and attraction sources.

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Fig. 5. MFDs and aggregation degree curves under different traffic generation and attraction source configuration: (a1) MFDof group A simulation scheme; (a2) aggregation degree curve of group A simulation scheme; (b1) MFDof group B simulation scheme; (b2) aggregation degree curve of group B simulation scheme; (b1) MFDof group C simulation scheme; (b2) aggregation degree curve of group C simulation scheme.

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交通发生吸引源配置方案	1	2	3	4	5
初始聚集度	–0.142	–0.146	–0.182	–0.082	–0.009
停车场规模配置情况/pcu·h^–1	20	38	93	272	38
	40	72	58	203	71
	60	279	121	50	50
	80	123	74	49	86
	100	46	80	322	408
	120	38	132	150	530
	140	108	147	49	389
	240	96	95	105	428

Table 1.

Traffic generation and attraction source configuration parameters.

交通发生吸引源配置参数

吸引源规模/pcu·h^–1	MFD拟合参数				${R^2}$
吸引源规模/pcu·h^–1	${a_i}$	${b_i}$	${c_i}$	${d_i}$	${R^2}$
800	2 × 10^–8	–0.0002	0.8434	192.34	0.876
1200	2 × 10^–8	–0.0002	0.8742	190.75	0.888
2000	2 × 10^–8	–0.0003	0.9424	188.86	0.901

Table 2. [in Chinese]

实验编号	A			B			C
停车场总规模/pcu·h^–1	800			1200			2000
实验组数	1	2	3	1	2	3	1	2	3
初始聚集度	–0.142	–0.146	–0.182	–0.082	–0.144	–0.171	–0.009	–0.104	–0.151
停车场规模/pcu·h^–1	20	38	93	272	138	70	38	100	268
	40	72	58	203	245	300	71	170	189
	60	279	121	50	367	210	50	140	99
	80	123	74	49	103	65	86	200	304
	100	46	80	322	179	70	408	260	341
	120	38	132	150	48	130	530	290	107
	140	108	147	49	37	220	389	350	402
	240	96	95	105	83	135	428	490	290

Table 3. [in Chinese]

实验组	MFD拟合参数				${R^2}$
实验组	${a_i}$	${b_i}$	${c_i}$	${d_i}$	${R^2}$
A1组	3 × 10^–8	–0.0003	1.0743	111.66	0.951
A2组	3 × 10^–8	–0.0004	1.0819	111.44	0.960
A3组	3 × 10^–8	–0.0003	1.0588	116.9	0.953
B1组	5 × 10^–8	–0.0005	1.3327	61.38	0.982
B2组	3 × 10^–8	–0.0004	1.0518	125.81	0.967
B3组	2 × 10^–8	–0.0003	0.9445	152.79	0.934
C1组	5 × 10^–8	–0.0005	1.3081	84.82	0.942
C2组	4 × 10^–8	–0.0005	1.2132	110	0.929
C3组	4 × 10^–8	–0.0005	1.2579	100.65	0.927

Table 4. [in Chinese]

实验编号	平均旅行完成率变化率/%	交通流状态
实验编号	平均旅行完成率变化率/%	Ⅰ	Ⅱ	Ⅲ
A	(A3–A1)/A1	0.77	3.13	30.96
	(A3–A2)/A2	0.61	1.14	3.29
	(A2–A1)/A1	0.16	1.96	26.79
B	(B3–B1)/B1	–0.11	–0.51	34.36
	(B3–B2)/B2	–0.02	0.24	7.45
	(B2–B1)/B1	–0.09	–0.74	25.05
C	(C3–C1)/C1	0.10	1.52	14.87
	(C3–C2)/C2	0.41	1.17	6.01
	(C2–C1)/C1	–0.31	0.34	8.36

Table 5. [in Chinese]

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