Bureau of Transportation Statistics (BTS)
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Table 3
Estimated Models for New Construction

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Variable Hypothesis Logit Mixed logit
Coefficient z Coefficient z
Length of the link (Lij) -S –5.91E-01 –1.35 1.84E-01 0.27
Capacity of the parallel link (Cp) -S –3.31E-01* –1.86 –4.87E-01* –1.67
Length of the parallel link (Lp) +S 4.93E-01* 1.58 1.42E+00* 1.97
Congestion on parallel link (Qp /Cp) +S –1.96E-05 –1.25 –5.23E-05* –1.87
Access (A) +S 4.24E-05* 4.70 1.92E-04* 2.71
Time period of construction (T) -S 7.31E-01* 2.24 3.00E+00* 3.27
Cost of construction (Eij) -S –2.82E-01* –2.48 –8.97E-01* –3.36
Budget (B) +S 5.68E-06* 3.06 7.78E-06* 3.96
Distance from downtown (X) +S –1.21E-01* –5.69 –3.08E-01* –6.62
Node density (D) -S –6.32E-04 –0.18 –1.27E-02* –1.73
Constant   –6.09E+00* –6.02 –1.24E+02* –2.92
Triangular deviation          
Constant   4.72E+01* 2.36
Number of observations   89,031   89,031  
Log likelihood   –473.19   –459.68  

* Significant at 90% confidence interval.