Table 1: Summary of data for estimating parameters ( = 4,680 observations).

VariableMeanStd. dev. Min.Max.

Toll (CLP$)410.4124.3222.0580.0
Speed (Km/h)70.816.115.395.7
Density (Veh/Km)26.48.76.253.8
Flow (Veh/h)3,501.1672.0611.05,194.0