Metamodel-Based Optimization Method for Traffic Network Signal Design under Stochastic Demand

Table 1

Network characteristics and model parameters.

Parameters	The NL model		The MNL model
OD demand (veh/h)	2000 (average)		2000
Parameter in cost function	0.13		0.15
Saturation flow (veh/h)	2000		2000
Free-flow travel time (h)	Link 1	0.1	Link 1	0.1
	Link 2	0.2	Link 2	0.8
	Link 3	0.05	Link 3	0.05
	Link 4	0.4	Link 4	0.4
	Link 5	0.15	Link 5	0.15
	Link 6	0.1	Link 6	0.7
	Link 7	0.2	Link 7	0.2
	Link 8	0.4	Link 8	0.4
Parameter of MNL			1
Parameter of NL	0.1
Parameter of NL	1