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Journal of Transportation and Statistics
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Volume 8 Number 2
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Paper 2
TABLE 3 - Summary of Empirical Results
500 Halton draws; 3,568 observations
Excel
|
CSV
Model 1: Full data
Model 2: Account for relevance
Estimated parameter
t-ratio
Estimated parameter
t-ratio
Mean random parameters
Free flow time
0.0893
3.95
0.0451
2.14
Slowed down time
−0.2449
−6.67
−0.0164
−0.64
Toll route constant
2.8599
5.47
2.2173
4.75
Standard deviation of random parameters
Free flow time
0.1565
7.90
0.1303
6.99
Slowed down time
0.0360
2.81
0.1872
5.89
Toll route constant
5.0973
6.10
5.6430
6.90
Fixed parameters
Running cost
−0.4519
−11.21
−0.3781
−10.84
Toll cost
−0.7733
−12.72
−0.6224
−11.95
Heterogeneity in the mean of random parameters: free flow time
Lead to improved pedestrian safety
0.0016
2.84
0.0015
3.05
Heterogeneity in the mean of random parameters: slowed down time
Provide better access to and from the city
−0.0026
−2.64
−0.0031
−3.78
Lead to improved pedestrian safety
−0.0017
−2.41
−0.0006
−0.94
Avoid traffic lights
0.0032
2.53
0.0034
2.72
Heterogeneity in the mean of random parameters: toll cost
Provide better access to and from the city
0.0404
2.62
0.0133
0.96
Lead to improved pedestrian safety
−0.0290
−2.73
−0.0095
−0.99
Avoid traffic lights
0.0648
4.02
0.0699
4.54
Heteroskedasticity in random parameters
Free flow by trip kms
−0.0056
−3.22
−0.0091
−3.66
Slowed down time by trip kms
0.0149
4.34
−0.0293
−3.84
Toll route constant by trip kms
−0.0229
−8.03
−0.0270
−8.80
LL(B)
−2,609.99
−2,609.99
−2,637.38
−2,637.38