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Outcomes of Variability in Teen Driving Experience and Exposure Evidence from Naturalistic Driving Studies (2025) / Chapter Skim
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Appendix: Supporting Tables
Pages 41-44

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From page 41...
... More Exposure Driving exposure that is more than the median normalized total hours of driving during the learner's permit phase for SPDS and early independent driving phase for SHRP 2 NDS. Functional FC 1 and 2 Driving that occurs on controlled -access highways Road and/or high-speed highways that connect distant Classification cities/communities.
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From page 42...
... Less More Less More Exposure Exposure Exposure Exposure Total traveled hours 698.227 2,160.54483 333.241 1,277.61 Traveled hours in daytime 620.483 1,858.258 207.1299 1,096.247 Traveled hours in nighttime 77.744 302.287 26.8298 158.944 Traveled hours in weekday 409.386 1,290.645 248.359 924.712 Traveled hours in weekend 288.841 869.899 84.88 352.895 Traveled hours on road 103.502 323.691 43.45 256.593 classes 1 and 2 446.059 1,423.485 714.437 2,710.175 Traveled hours on road classes 3, 4, and 5 Number of familiar road trips 2,194 6,269 Number of unfamiliar road trips 356 714 Passenger presence 633.588 1,883.57 116.670 458.725 Rate of CNC 0.005729 0.00555 0.015 0.00783 Rate of hard braking 0.0578 0.0581 0.33 1.47 Rate of cornering 0.023 0.023 0.41 1.033
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From page 43...
... (miles) hour mile Early 1,610.85 36,681.01 15 0.0093 0.000409 Independent Driving Later 4,361.81 106,379.99 40 0.00917 0.000376 Independent Driving SPDS Driving time Driving distance CNCs CNC rate per CNC rate per (hours)
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From page 44...
... Weekday 1.010 0.918 1.109 0.838 Unfamiliar vs. Familiar 0.662 0.521 0.829 0.001 Table A-6.   KRD Poisson regression model -- hard braking rate odds ratio estimate, CI, and p value.
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Key Terms

  • driving time
  • traveled hours
  • cnc rate
  • poisson regression
  • independent driving

  • rate odds
  • exposure exposure
  • krd poisson
  • driving driving
  • cornering rate

  • driving distance
  • braking rate
  • driving phase
  • front seat
  • total hours

  • share family
  • primary access
  • normalized total
  • seat passenger
  • family vehicle

  • vehicle means
  • spds driving
  • cnc poisson
  • total traveled
  • total driving

  • hard braking
  • yaw rate
  • vehicle primary
  • operational definition
  • teen drove


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