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Chapter XII. Appendix

Table 48: Number and Percentage of Trips by Length and Survey Year
Survey Year Trips < 75 miles Trips > 75 miles
1 trip
Trips > 75 miles
2 trips
Trips > 75 miles
3+ trips
Trips > 75 miles
Total: Excluded Trips
1990 32,206 (94%) 771 (2%) 983 (3%) 291 (1%) 2,045 (6%)
2001 123,998 (96%) 2,771 (2%) 1,548 (1%) 195 (.2%) 4,514 (4%)
2009 217,600 (97%) 3,946 (2%) 2,108 (1%) 239 (.1%) 6,293 (3%)

Table 49: PMT by Employment Status and Age Group (1990, 2001, and 2009)
  1990
Teens
1990
Young Adult
1990
Adult
2001
Teens
2001
Young Adult
2001
Adult
2009
Teens
2009
Young Adult
2009
Adult
Not Employed 16.3 17.5 17.3 19.9 19.5 23.6 17.3 21.3 20.6
Full Time 25.6 30.5 28.0 32.0 33.8 36.7 20.7 31.7 33.0
Part Time 25.6 30.5 28.0 27.8 27.9 30.0 24.0 28.0 26.2

Table 50. PMT Cross-Sectional Model – Standardized Coefficients
  Teen
1990
Teen
2001
Teen
2009
Young Adult
1990
Young Adult
2001
Young Adult
2009
Adult
1990
Adult
2001
Adult
2009
Individual Characteristics
Age -0.39***light blue indicates statistically significant 0.01 -0.56***light blue indicates statistically significant -0.02 -0.02 0.03 -0.01***light blue indicates statistically significant -0.01*light blue indicates statistically significant 0.00
Female -0.06 -0.32***light blue indicates statistically significant 0.01 -0.02 0.01 0.11 0.03 -0.14***light blue indicates statistically significant 0.07
NH White omitted omitted omitted omitted omitted omitted omitted omitted omitted
NH Black -0.02 -0.07 -0.17 -0.49*light blue indicates statistically significant 0.07 0.39*light blue indicates statistically significant -0.20*light blue indicates statistically significant 0.02 0.21**light blue indicates statistically significant
NH Asian   0.39*light blue indicates statistically significant -0.23   -0.02 0.17   -0.16 0.10
Hispanic -0.11 -0.23 -0.16*light blue indicates statistically significant -0.39 -0.26 0.27 -0.19*light blue indicates statistically significant -0.17 0.23***light blue indicates statistically significant
NH Other -0.07 -0.34*light blue indicates statistically significant -0.17 -0.37 -0.04 0.35 -0.37*light blue indicates statistically significant 0.05 -0.25
Employed 0.60***dark blue indicates statistically significant over time (across all the years for which data were available 0.29***dark blue indicates statistically significant over time (across all the years for which data were available 0.81***dark blue indicates statistically significant over time (across all the years for which data were available 0.97***dark blue indicates statistically significant over time (across all the years for which data were available 1.02***dark blue indicates statistically significant over time (across all the years for which data were available 1.19***dark blue indicates statistically significant over time (across all the years for which data were available 0.95***dark blue indicates statistically significant over time (across all the years for which data were available 0.94***dark blue indicates statistically significant over time (across all the years for which data were available 1.08***dark blue indicates statistically significant over time (across all the years for which data were available
Web Use Daily no data -0.12 0.11 no data 0.02 0.16 no data 0.01 0.21***
Driver 0.35*dark blue indicates statistically significant over time (across all the years for which data were available 0.38***dark blue indicates statistically significant over time (across all the years for which data were available 0.48***dark blue indicates statistically significant over time (across all the years for which data were available 0.40*dark blue indicates statistically significant over time (across all the years for which data were available 1.54***dark blue indicates statistically significant over time (across all the years for which data were available 1.20***dark blue indicates statistically significant over time (across all the years for which data were available 1.08***dark blue indicates statistically significant over time (across all the years for which data were available 1.12***dark blue indicates statistically significant over time (across all the years for which data were available 1.70***dark blue indicates statistically significant over time (across all the years for which data were available
Less than High School omitted omitted omitted omitted omitted omitted omitted omitted omitted
High School Graduate -0.37 0.39 0.65**light blue indicates statistically significant 0.18 0.23 0.25 0.19*light blue indicates statistically significant 0.18 0.23
Some College -0.31 0.57**light blue indicates statistically significant 0.59**light blue indicates statistically significant 0.15 0.43 0.32 0.53***dark blue indicates statistically significant over time (across all the years for which data were available 0.41***dark blue indicates statistically significant over time (across all the years for which data were available 0.33**dark blue indicates statistically significant over time (across all the years for which data were available
College Graduate -0.66*dark blue indicates statistically significant over time (across all the years for which data were available 0.76***dark blue indicates statistically significant over time (across all the years for which data were available 0.71***dark blue indicates statistically significant over time (across all the years for which data were available 0.22 0.70*light blue indicates statistically significant 0.45 0.49***dark blue indicates statistically significant over time (across all the years for which data were available 0.49***dark blue indicates statistically significant over time (across all the years for which data were available 0.43***dark blue indicates statistically significant over time (across all the years for which data were available
Grad or Prof. Degree -0.35 0.65**light blue indicates statistically significant 0.73***light blue indicates statistically significant 0.50*light blue indicates statistically significant 0.71*light blue indicates statistically significant 0.51 0.61***dark blue indicates statistically significant over time (across all the years for which data were available 0.53***dark blue indicates statistically significant over time (across all the years for which data were available 0.43***dark blue indicates statistically significant over time (across all the years for which data were available
Young Adult Lives with Parents       -0.24 -0.03 -0.02      
Household Characteristics
Household Income (ln) 0.08 -0.01 0.02 0.11 -0.04 -0.01 0.12***dark blue indicates statistically significant over time (across all the years for which data were available 0.16***dark blue indicates statistically significant over time (across all the years for which data were available 0.16***dark blue indicates statistically significant over time (across all the years for which data were available
Number of Adults -0.09 0.31***light blue indicates statistically significant 0.04 -0.01 0.04 -0.08 -0.11**light blue indicates statistically significant -0.01 -0.02
Number of Children -0.13*light blue indicates statistically significant -0.11***light blue indicates statistically significant -0.07*light blue indicates statistically significant -0.11* 0.03 0.03 0.02 0.10***light blue indicates statistically significant 0.12***light blue indicates statistically significant
Autos Per Adult 0.59***light blue indicates statistically significant 0.36***light blue indicates statistically significant 0.10 0.47***dark blue indicates statistically significant over time (across all the years for which data were available 0.34**dark blue indicates statistically significant over time (across all the years for which data were available 0.45**dark blue indicates statistically significant over time (across all the years for which data were available 0.22***dark blue indicates statistically significant over time (across all the years for which data were available 0.21***dark blue indicates statistically significant over time (across all the years for which data were available 0.19***dark blue indicates statistically significant over time (across all the years for which data were available
Geographic Characteristics
Population Density (ln) 0.04 -0.17***light blue indicates statistically significant -0.11***light blue indicates statistically significant -0.06 -0.05 -0.08 -0.09***dark blue indicates statistically significant over time (across all the years for which data were available -0.09***dark blue indicates statistically significant over time (across all the years for which data were available -0.05**dark blue indicates statistically significant over time (across all the years for which data were available
MSA > 3 million 0.03 -0.39***light blue indicates statistically significant 0.01 0.08 -0.23*light blue indicates statistically significant 0.16 0.08 0.08 -0.04
Constant 7.39***light blue indicates statistically significant 0.61 9.69***light blue indicates statistically significant -0.01 0.32 -1.07 -0.76*dark blue indicates statistically significant over time (across all the years for which data were available -1.49***dark blue indicates statistically significant over time (across all the years for which data were available -2.87***dark blue indicates statistically significant over time (across all the years for which data were available
Model N 1252 19383 31046 3185 7736 9174 13167 57061 105063
Adjusted R2 0.09 0.09 0.11 0.10 0.12 0.10 0.11 0.08 0.13
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