BTS | Table B-1 Arnold Model

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BTS Home > Publications > Journal of Transportation and Statistics > Volume 4 Number 1 > Paper 4

Table B-1 Arnold Model

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	Equation
	1	2	3	4
Assumptions: Semantic differences: Effectiveness: Minimum-average	1	1	1.0	1.0
Assumptions: Semantic differences: Effectiveness: Average-maximum	1	1	3.2	2.7
Assumptions: Semantic differences: Cost: Inexpensive-average	1	1	1.0	0.0
Assumptions: Semantic differences: Cost: Average-expensive	1	1	3.2	1.0
Assumptions: Semantic differences: Implementation: Easy-average	1	1	1.0	1.0
Assumptions: Semantic differences: Implementation: Average-difficult	1	1	3.2	1.7
Assumptions: Component weights	Not applicable	Not applicable	Not applicable	Not applicable
Results: Estimated coefficients: Add supply: Coefficient		0.29	0.31	0.35
Results: Estimated coefficients: Add supply: Standard error		0.19	0.21	0.21
Results: Estimated coefficients: Add supply: t-score		1.54	1.49	1.63
Results: Estimated coefficients: TDM: Coefficient		-0.16	-0.14	-0.15
Results: Estimated coefficients: TDM: Standard error		0.17	0.15	0.15
Results: Estimated coefficients: TDM: t-score		-0.96	-0.93	-1
Results: Estimated coefficients: Growth control: Coefficient		0.04	0.00	0.01
Results: Estimated coefficients: Growth control: Standard error		0.14	0.13	0.13
Results: Estimated coefficients: Growth control: t-score		0.28	-0.04	0.05
Results: Estimated coefficients: Effectiveness: Coefficient	0.64*	0.46*	0.54*	0.51*
Results: Estimated coefficients: Effectiveness: Standard error	0.14	0.19	0.19	0.19
Results: Estimated coefficients: Effectiveness: t-score	4.49	2.42	2.88	2.73
Results: Estimated coefficients: Cost: Coefficient	-0.09	-0.15	-0.25	-0.28
Results: Estimated coefficients: Cost: Standard error	0.16	0.17	0.18	0.20
Results: Estimated coefficients: Cost: t-score	-0.55	-0.85	-1.37	-1.38
Results: Estimated coefficients: Implementation: Coefficient	-0.48*	-0.61*	-0.58*	-0.57*
Results: Estimated coefficients: Implementation: Standard error	0.16	0.18	0.18	0.18
Results: Estimated coefficients: Implementation: t-score	-3.06	-3.35	-3.28	-3.19
Results: Estimated coefficients: Goodness-of-fit: Standard error of Y	0.85	0.84	0.83	0.83
Results: Estimated coefficients: Goodness-of-fit: R-squared	32.40%	36.70%	38.60%	39.30%
Results: Estimated coefficients: Goodness-of-fit: Number of observations	53	53	53	53
Results: Estimated coefficients: Goodness-of-fit: Degrees of freedom	50	47	47	47

* significant at 0.01 level
** significant at 0.05 level
*** 1.00 < t < 2.00
d.f. = degrees of freedom
HOV = high-occupancy vechicle
NA = not applicable
SOV = single-occupancy vehicle
SRSD = studentized residual
TDM = travel demand management
TMA = transportation management association
TSM = transportation system management
U = data are unavailable
VHT = vehicle hours of travel
VMT = vehicle-miles traveled
* Significant at 95% confidence interval.