Intersection Group Dynamic Subdivision and Coordination at Intraregional Boundaries in Sudden Disaster

Table 1

Traffic flow performance in intraregional boundaries under different traffic signal control strategies.

Traffic flow status	Statistics item	Delay		Speed		Saturation		Queen
		Mean value	STDEV	Mean value	STDEV	Mean value	STDEV	Mean value	STDEV
Free	SP	4.227	1.306	48.13	5.565	0.5197	0.1529	13.22	5.714
	RP	4.212	1.263	48.24	5.397	0.5233	0.1557	12.13	5.512
	BP	4.165	1.266	48.56	5.474	0.5132	0.1537	10.81	4.273
	REDEV I%	−1.467	−3.063	0.8934	−1.635	−1.251	0.5232	−18.23	−25.22
	REDEV II%	−1.116	0.2375	0.6633	1.427	−1.930	−1.285	−10.88	−22.48
Smooth	SP	28.67	6.094	41.93	8.841	0.6808	0.1721	35.69	4.37
	RP	25.43	5.873	42.17	7.064	0.6637	0.1673	34.66	3.25
	BP	16.84	3.257	43.06	5.563	0.6551	0.1024	24.37	6.45
	REDEV I%	−41.26	−46.55	2.695	−37.08	−3.775	−40.50	−31.72	47.60
	REDEV II%	−33.78	−44.54	2.111	−21.25	−1.296	−38.79	−29.69	98.46
Congestion	SP	44.27	3.714	21.27	3.152	0.9394	0.1271	50.58	6.991
	RP	41.32	4.257	23.61	3.231	0.9051	0.1104	47.15	9.342
	BP	30.27	3.335	28.39	4.173	0.8609	0.0964	34.66	3.25
	REDEV I%	−31.62	−10.20	33.47	32.39	−8.356	−24.15	−31.47	−53.51
	REDEV II%	−26.74	−21.66	20.25	29.16	−4.883	−12.68	−26.49	−65.21

Note. STDEV means standard deviation. REDEV means relative deviation. REDEV I% = (BP − SP) 100/SP. REDEV II% = (BP − RP) 100/RP.