These models assume that the freight mode choice data represent the actual market in the US. Hence, the sample was not weighted for the model estimation. Tables 26 to 31 present the shipment-level models without any sample weights. Wherever the transit time variable is found to not be statistically significant it is excluded from the tables.
Transit time and freight rate models
This section presents the unweighted shipment-level models that consider freight rate or transit times as separate independent variables. There are cases where only the freight rates are statistically significant (the transit time is not). In these cases, the team decided to accept these models are valid.
Pooled models
2-digit SCTG models
Generalized cost models
This section presents the unweighted shipment-level models that consider generalized costs as independent variables.
Pooled models
2-digit SCTG models
