Research Article

Nonlinear Autoregressive Conditional Duration Models for Traffic Congestion Estimation

Table 2

Statistical specifications of (a) congestion duration data and (b) the duration of related uncongested traffic periods.

Congestion duration (periods)

Mean4.69
Standard deviation7.41
Variance54.97
Skewness4.78
Excess kurtosis32.14
(10)60.366
LM ARCH (4)17.871