BTS | Table 4 - Regression Results

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

Table 4 - Regression Results

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Author	Independent variables			d.f.	R² (percent)
Author	Effectiveness	Cost	Implementation	d.f.	R² (percent)
Arnold	+0.51*	-0.28***	-0.57*	49	39.3
Downs	-0.32**	-0.62*	-0.35**	19	75.4
Zupan	-0.45*	+0.39*	-0.56*	18	78.3
Dueker et al	-0.84*	NA	-0.04	9	67.8
Booz-Allen Hamilton	-0.22***	NA	-0.70*	28	52.2

* 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.