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

National Data Source
Licensing Systems for Young Drivers; Insurance Institute for Highway Safety (IIHS)
Changed Since the Healthy People 2020 Launch
Baseline (Year)
32 (2009)
Target-Setting Method
Total coverage
Number of states and the District of Columbia with “good” Graduated Drivers Licensing Laws as defined by the Insurance Institute for Highway Safety
Questions Used to Obtain the National Baseline Data

From the Licensing Systems for Young Drivers:


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;

"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 16 or if it allowed unrestricted driving before 16, 6 months.

The following schedule was used to assign points:

Learner's entry age: 1 point for learner's entry age ≥16.

Learner's holding period: 2 points for ≥6 mo; 1 point for 3-5 mo; none for <3 mo.

Practice driving certification: 1 point for ≥30 hr; none for less than 30 hr.

Night driving restriction: 2 points for 9 or 10 pm; 1 point for after 10 pm.

Passenger restriction: 2 points for ≤1 underage passenger; 1 for 2 passengers; none for 3; where supervising driver may be <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.

Data Collection Frequency
Comparable Healthy People 2010 Objective
Adapted from HP2010 objective


Description of Changes Since the Healthy People 2020 Launch

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 on the effective date instead of the passage date.

References and More Information

  1. IIHS GDL Rating System