Comparative Analysis of Optimization Models for Paired Intersections with Left-Turn Bays

Table 2

Optimization results for ninety numerical examples.

Model	Demand	Spacing (m)	Effective green times for intersection A (s)						Offset (s)	Left-turn bay lengths for intersection A (m)
			Phase 1	Phase 2	Phase 3	Phase 4	Phase 5	Phase 6		Eastbound	Southbound	Westbound	Northbound
US	Low	245	14.54	0.70	14.81	14.86	0.53	15.11	—	45.72	44.57	43.62	45.33
US	Low	345	14.54	0.70	14.81	14.86	0.53	15.11	—	45.72	44.57	43.62	45.33
US	Low	445	14.54	0.70	14.81	14.86	0.53	15.11	—	45.72	44.57	43.62	45.33
…	…	…	…	…	…	…	…	…	…	…	…	…	…
CS	High	1445	23.16	0.00	27.00	23.36	5.03	23.60	0	69.47	70.07	69.47	70.79
CS	High	1545	23.16	0.00	27.02	23.38	5.01	23.65	0	69.47	70.13	69.47	70.95
CS	High	1645	23.16	0.00	27.00	23.36	5.03	23.60	0	69.47	70.07	69.47	70.79
Model	Demand	Spacing (m)	Effective green times for intersection B (s)						Offset (s)	Left-turn bay lengths for intersection B (m)
			Phase 1	Phase 2	Phase 3	Phase 4	Phase 5	Phase 6		Eastbound	Southbound	Westbound	Northbound
US	Low	245	14.71	0.00	14.94	14.19	1.38	14.19	—	44.14	42.57	44.82	42.56
US	Low	345	14.71	0.00	14.94	14.19	1.38	14.19	—	44.14	42.57	44.82	42.56
US	Low	445	14.71	0.00	14.94	14.19	1.38	14.19	—	44.14	42.57	44.82	42.56
…	…	…	…	…	…	…	…	…	…	…	…	…	…
CS	High	1445	23.00	2.09	24.40	24.62	3.39	24.64	106.55	68.99	73.85	73.20	73.93
CS	High	1545	23.01	2.09	24.43	24.63	3.39	24.66	55.30	69.04	73.89	73.28	73.99
CS	High	1645	23.00	2.09	24.40	24.62	3.39	24.64	107.99	68.99	73.85	73.20	73.93
Model	Demand	Spacing (m)	Intersection A						Intersection B
			Capacity (pcu/h)	Delay (s)	Average delay (s/pcu)		Degree of saturation		Capacity (pcu/h)	Delay (s)	Average delay (s/pcu)		Degree of saturation
US	Low	245	6076.26	182727.86	37.22		0.81		6057.41	180072.06	36.92		0.81
US	Low	345	6076.26	182727.86	37.22		0.81		6057.41	180072.06	36.92		0.81
US	Low	445	6076.26	182727.86	37.22		0.81		6057.41	180072.06	36.92		0.81
…	…	…	…	…	…		…		…	…	…		…
CS	High	1445	6517.71	326951.51	56.62		0.89		6516.52	341106.02	58.28		0.90
CS	High	1545	6518.23	326984.33	56.63		0.89		6517.04	341198.07	58.29		0.90
CS	High	1645	6517.71	326951.51	56.62		0.89		6516.52	341106.02	58.28		0.90