Table 6 - Outliers

Table 6 - Outliers

Note: studentized residuals may be interpreted as tests of "t."

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Author Strategies Tactics Studentized residual
Arnold TSM (11 of 20) Major intersection improvements -2.02
Arnold TSM (11 of 20) Removing/restricting on-street parking -1.86
Arnold TSM (11 of 20) Traffic management during reconstruction -1.49
Arnold TSM (11 of 20) Turn prohibitions -1.1
Arnold TSM (11 of 20) Minor intersection improvements -1.09
Arnold TSM (11 of 20) One-way streets -1.05
Arnold TSM (11 of 20) Integrated freeway/arterial surveillance/control system 1.03
Arnold TSM (11 of 20) Reversible traffic lanes on arterials 1.29
Arnold TSM (11 of 20) Traffic surveillance/control system 1.44
Arnold TSM (11 of 20) Traffic management team 1.66
Arnold TSM (11 of 20) Motorist information system 1.67
Arnold Supply (4 of 7) Reconstructing highways with improved design -1.64
Arnold Supply (4 of 7) Constructing new highways -1.14
Arnold Supply (4 of 7) Constructing HOV lanes 1.35
Arnold Supply (4 of 7) Toll-based financing to expedite new facilities 1.40
Arnold TDM (1 of 21) Implementing/improving paratransit services -1.34
Arnold Growth (1 of 5) Growth management -1.85
Downs Supply (4 of 8) Rapidly removing accidents -1.55
Downs Supply (4 of 8) Building added HOV lanes -1.41
Downs Supply (4 of 8) Building new roads without HOV lanes 1.11
Downs Supply (4 of 8) Improved transit service, amenities 1.19
Downs Demand (4 of 15) Adopting local growth limits -1.61
Downs Demand (4 of 15) Increasing automobile license fees 1.04
Downs Demand (4 of 15) Staggered working hours 1.29
Downs Demand (4 of 15) Tax-deductable commuting allowances 1.92
Zupan TDM (7 of 22) Transitchek (tax-deductable vouchers) -1.81
Zupan TDM (7 of 22) Transit-friendly design -1.26
Zupan TDM (7 of 22) Carpools -1.22
Zupan TDM (7 of 22) Staggered shifts -1.22
Zupan TDM (7 of 22) Preferential parking -1.06
Zupan TDM (7 of 22) Employer-subsidized transit 1.06
Zupan TDM (7 of 22) Trip reduction ordinances 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.