Protected Turning Movements of Noncooperative Automated Vehicles: Geometrics, Trajectories, and Saturation Flow

Table 1

Calculated saturation flow rate values (veh/hour/lane) for turning movements of selected radius/speed combinations.

ACDA interpretation	Lane context
		(7.8 mph @ )	(12.4 mph @ )	(13.8 mph @ )	(14.3 mph @ )	(12.9 mph @ )	(17.9 mph @ )	(19.3 mph @ )	(14.0 mph @ )	(25.2 mph @ )	(22.1 mph @ )	(15.2 mph @ )	(30.9 mph @ )
Weak	Single turn lane, or largest-radius turn lane if movement served by multiple turn lanes	1552	2236	2400	2449	2308	2812	3000	2449	3429	3214	2609	3750
Weak	If multiple turn lanes, all lanes except largest-radius turn lane	1552	2236	2400	2400	2250	2769	2951	2416	3396	3214	2590	3711
Strong	Single turn lane or largest-radius turn lane if movement served by multiple turn lanes	1429	1818	1865	1957	1865	2057	2045	1915	2143	2081	1989	1989
Strong	If multiple turn lanes, all lanes except largest-radius turn lane	1429	1818	1865	1946	1809	2000	2022	1885	2143	2069	1989	1989
Human driving behavior (per Highway Capacity Manual [19])	Single turn lane	1615 (right turn, does not vary with radius)
		1805 (left turn, does not vary with radius)
	Double turn lanes (per lane)	1425 (right turn, does not vary with radius)
		1748 (left turn, does not vary with radius)