Bureau of Transportation Statistics (BTS)
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Table C-3 Zupan Output

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TDM solutions Effectiveness Cost Implementation Acceptability SRSD
Transitchek (tax deductable vouchers) 1.15 -0.46 -1.77 1.19 -1.81
Transit-friendly design 1.15 -1.15 -0.8 0.10 -1.26
Carpools -0.59 -0.46 0.18 0.60 -1.22
Staggered shifts -0.57 1.07 0.18 1.19 -1.22
Preferential parking -0.64 1.07 1.15 0.60 -1.06
Vanpools -1.22 1.07 1.15 0.60 -0.53
Four-day workweek -0.78 -0.46 0.18 0.33 -0.52
Higher density development 2.13 -1.15 1.15 -1.82 -0.48
Subscription buses -0.05 1.07 1.15 0.04 -0.46
Preferential HOV lanes 0.57 0.23 -0.8 0.33 -0.12
Employer sponsored transit -0.05 1.07 -0.8 0.89 -0.01
Mixed use development -0.47 -1.15 -0.8 0.10 0.21
Park and rides 0.57 0.23 -0.8 0.10 0.35
Telecommuting -1.8 -0.46 0.18 0.33 0.40
Transportation management associations -0.01 1.07 0.18 0.10 0.45
Flex-time -1.54 1.07 -0.8 1.19 0.74
Congestion pricing 0.81 -1.15 0.18 -1.32 0.80
Parking ratios 0.57 -1.99 1.15 -2.11 0.86
Growth management -1.26 -1.15 0.18 -0.46 0.96
Parking pricing 0.57 -0.46 2.12 -2.11 0.98
Employer subsidized transit -0.05 1.07 -1.77 0.89 1.06
Trip reduction ordinances 1.49 1.07 -0.8 -0.76 1.88

* 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.