A Signal Optimization Model of Adjacent Closely Spaced Intersections Which Optimizes Pedestrian Crossing

Table 2

Parameters’ description.

Parameters	Description	Unit
Decision variable
C	Cycle length	s
	Effective green time	s
	Effective green time for pedestrians	s
	Red light time	s
Input parameter
	Volume of intersection entrance lane j under phase i	veh/h
	Intersection capacity	veh/h
	Flow rate of earlier stage	veh/h
	Flow rate of platoon	veh/h
	Flow rate of late stage	veh/h
	Saturation flow rate	veh/h
Intermediate variable
	Vehicle delay per cycle at adjacent closely spaced intersections	s
	Pedestrian total delay per cycle at closely spaced intersections	s
	Average delay of vehicles at entrance lane j under phase i	s
	Average pedestrian delay at entrance lane j under phase i	s
	The total delay per cycle of nonarterial road	s
	The total delay per cycle of arterial road	s
	Green time ratio at phase i	—
	Saturation of intersection	—
	Traffic density under scenario m	veh/km
	Platoon gathering time under scenario m	s
	Dissipation time of vehicles under scenario m	s
	Average delay of arterial road under scenario m	s
	Maximum queue length under scenario m	m
	Length of the upstream link	m
	Length of the downstream link	m
	The time of vehicle platoon arrive at the downstream intersection	s
Parameter
	Scenario number	—
	Dynamic weight factor under scenario m	—
	Signal lost time	s
	Duration of analysis	h
	Incremental delay factor
	Incremental delay factor