Fig 1.
The test network used in the numerical example.
Table 1.
The true and initial OD vector matrices.
Table 2.
Free flow travel time and capacity for each link.
Table 3.
True link flows in the hypothetical network.
Fig 2.
Convergence of the theta estimate.
Fig 3.
Convergence of the objective function.
Fig 4.
RMSE(OD) versus cvd and cvθ.
Fig 5.
RMSE(LF) versus cvd and cvθ.
Fig 6.
Estimated Theta versus cvd and cvθ.
Table 4.
Comparison between Yang et al.’s approach and the proposed approach with OD matrix and link flow estimation.
Table 5.
Comparison between Lo and Chan’s approach and the proposed approach with OD matrix, link flow and Theta estimation.
Fig 7.
Double circle nodes represent zone centroids (origins and destinations).
Fig 8.
Traffic flow fluctuation by time of day.
Table 6.
BPR link performance cost function parameter calibration.
Table 7.
The external true traffic flow for each node at peak hour.
Table 8.
True OD matrix and initial OD matrix at peak hour for each OD pair.
Table 9.
Observed link flows at peak hour.
Fig 9.
RMSE(OD) versus cvd and cvθ in the actual network.
Fig 10.
RMSE(LF) versus cvd and cvθ in the actual network.
Fig 11.
Theta estimated versus cvd and cvθ in the actual network.
Fig 12.
Estimated Theta values in the actual network by time of day.