A Hybrid Fuzzy Genetic Algorithm for an Adaptive Traffic Signal System

Table 3

Results of one cycle of the traffic signal that contains four passing signals, Conventional Traffic Controller, CTC, FLC with traditional logic method, and FLC with Genetic Algorithms, FLCGA. NVB is the number of vehicles that exists in the area of the four intersections before applying the method; NVP is the number of vehicles passing the traffic signal. TOC is the summation of the total time of green lights time interval in the four intersections at the same time decided by the method.

NOA	NVB	CTC		FLC		FLCGA
		NVP	TOC	NVP	TOC	NVP	TOC
1	233	72	60	68	51	82	55.6
	240	82	60	51	33.1	61	34
	282	92	60	70	42.9	81	42.9
	214	86	60	60	40	68	44
Total		332	240	249	167	292	176.5
2	222	78	60	67	53	74	53
	207	69	60	47	37.5	67	40
	222	79	60	59	41.8	67	41.8
	194	62	60	62	52.4	77	52.4
Total		288	240	235	184.7	285	187.2
3	233	68	60	55	40.8	72	49.3
	244	64	60	59	49.4	84	55.4
	243	72	60	64	51.4	79	51.4
	261	71	60	54	40.4	71	39.5
Total		275	240	232	182	306	195.6
4	238	82	60	70	49.2	79	49.2
	269	90	60	64	36.5	79	47.8
	234	85	60	81	55.7	90	55.7
	236	82	60	60	38.5	68	38.5
Total		339	240	275	179.9	316	191.2
5	306	89	60	37	20	67	30
	250	83	60	55	30	73	37.3
	246	77	60	62	46	77	46
	227	74	60	58	48.9	90	56.7
Total		323	240	212	144.9	307	170
Mean		311.4	240.0	240.6	171.7	301.2	184.1
Std. dev.		±25.3	±0.0	±20.9	±14.7	±11.2	±9.5
Mean of absolute deviation		23.0	0.0	10.0	13.7	9.0	9.1
Median		323.0	240.0	235.0	179.9	306.0	187.2