Dynamic O-D Demand Estimation: Application of SPSA AD-PI Method in Conjunction with Different Assignment Strategies

Table 1

Experiment design.

Experiments	Type of DTA	Measures inside the OF for each type of DTA
Set I	DUE	OF1: link volume; OF2: link volume + speed; OF3: link volume + density; OF4: link volume + queue length; OF5: link volume + speed + density; OF6: link volume + speed + queue length; OF7: link volume + density + queue length; OF8: link volume + density + speed + queue length
Set II	SO
Set III	DNL
Set IV	50% DUE – 50% SO
Set V	DNL + fixed DUE paths
Set VI	DNL + fixed DUE paths (highest O–D flows)
Set VII	DUE + fixed DUE paths (highest O–D flows)
Set VIII	QDTA	O.F.1: link volume; O.F.2: link volume + speed; O.F.3: link volume + density; O.F.5: link volume + speed + density