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IVP-17 Data Details

IVP-17 Increase the number of States and the District of Columbia with “good” graduated driver licensing (GDL) laws

About the Data

Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.

National Data Source
Licensing Systems for Young Drivers; Insurance Institute for Highway Safety (IIHS)
Changed Since the Healthy People 2020 Launch
Yes
Measure
number 
Baseline (Year)
32 (2009)
Target
51
Target-Setting Method
Total coverage
Numerator
Number of states and the District of Columbia with “good” Graduated Drivers Licensing Laws as defined by the Insurance Institute for Highway Safety
Data Collection Frequency
Annual
Comparable Healthy People 2010 Objective
Adapted from HP2010 objective
Methodology Notes

For each state, points are assigned for the key components of graduated licensing. "Good" systems scored 6 or more points; "Fair" systems scored 4 or 5; "Marginal" systems 2 or 3; and "Poor" ones scored less than 2 points.

Regardless of point totals, no state was rated above "marginal" if intermediate license holders could be younger than age16 or if it allowed unrestricted driving before age 16 years, 6 months.

The following schedule was used to assign points:

  • Learner's entry age: 1 point for learner's entry age 16+ years.
  • Learner's holding period: 2 points for 6+ months; 1 point for 3-5 months; none for <3 months
  • Practice driving certification: 1 point for 30+ hours; none for <30 hours.
  • Night driving restriction: 2 points for 9 or 10 pm; 1 point for after 10 pm.
  • Passenger restriction: 2 points for no or 1 underage passenger; 1 point for 2 passengers; none for 3; where supervising driver may be under age 21, point values were determined including the supervising driver as a passenger.
  • Driver education: Where completion of driver education changed a requirement, point values were determined for the driver education track.
  • Duration of restrictions: 1 point if difference between minimum unrestricted license age and minimum intermediate license age is 12 or more months; night driving and passenger restrictions were valued independently.
Changes Between HP2010 and HP2020
This objective differs from Healthy People 2010 objective 15-22 in that the definition was modified to from the number of the states with graduated driver licensing laws to the number of states with such laws rated as “good” based on the criteria set by the Insurance Institute for Highway Safety.

Revision History

Any change to the objective text, baseline, target, target-setting method or data source since the Healthy People 2020 launch.

Description of Changes Since the Healthy People 2020 Launch

In 2012, the original baseline was revised from 35 to 32 states due to a change in the methodology. The data year is now based on the effective date of the state law instead of the passage date. The target of 51 states did not change.

References

Additional resources about the objective.