Development of an Optimization Traffic Signal Cycle Length Model for Signalized Intersections in China

Table 1

Data collection results.

Sites number	Traffic parameters
	1	2400	26.46	0.50	120	0.64
2	1470	53.92	0.28	160	0.70
3	990	56.07	0.20	120	0.81
4	1835	36.77	0.36	120	0.85
5	1150	37.84	0.32	110	0.47
6	1207	33.89	0.45	160	0.60
7	1600	22.98	0.68	180	0.92
8	1490	24.06	0.65	120	0.92
9	870	11.05	0.55	80	0.21
10	630	25.57	0.36	100	0.23
11	2065	17.76	0.72	155	0.90
12	185	10.49	0.47	60	0.18
13	790	18.05	0.50	75	0.82
14	845	14.94	0.47	60	0.81
15	1845	37.08	0.51	100	0.98
16	1530	33.74	0.50	105	0.98
17	770	20.22	0.56	95	0.85
18	1540	37.25	0.56	95	0.70
19	410	12.49	0.41	60	0.35
20	770	14.15	0.42	60	0.67
21	875	19.43	0.41	75	0.73
22	745	24.03	0.42	100	0.65
23	745	36.92	0.41	130	0.63
24	1180	33.73	0.33	110	0.76
25	1040	41.36	0.31	120	0.64
26	1395	40.36	0.39	120	0.96
27	495	24.05	0.31	90	0.30
28	735	44.18	0.33	150	0.47
29	1025	37.62	0.16	80	0.32
30	1805	36.75	0.31	120	0.51
31	2503	22.01	0.55	120	0.69
32	1439	66.19	0.27	170	0.67
33	1054	60.08	0.19	130	0.88
34	1770	38.17	0.33	120	0.77
35	1184	12.07	0.61	110	0.45
36	1063	34.16	0.44	140	0.56
37	2810	61.32	0.36	170	0.83
38	1865	37.28	0.54	130	0.95
39	891	12.76	0.56	80	0.19
40	683	26.63	0.33	95	0.24
41	2236	25.27	0.68	170	0.88
42	198	11.90	0.46	60	0.17
43	720	18.64	0.51	70	0.86
44	888	19.11	0.42	75	0.79
45	1716	39.55	0.53	100	0.96
46	1971	36.40	0.46	120	0.98
47	1710	58.43	0.56	90	0.91
48	1462	19.64	0.54	100	0.75
49	441	16.25	0.43	60	0.32
50	755	17.54	0.40	60	0.63

represents the maximum traffic volume of the intersection in 15 minutes, pcu/15 min;
represents the average delay time of each vehicle, s;
represents the maximum green split;
represents the cycle length of the saturation, s;
represents the saturation degree of the intersection.