Skip to main content
You can also sort pages by filters.
Table of Contents
Download the Full Book

The agencies and organizations listed below can provide more information on drowsy driving and links to numerous other resources.

Key terms

  • GDL: Graduated driver licensing, a three-phase system for beginning drivers consisting of a learner’s permit, a provisional license, and a full license. A learner’s permit allows driving only while supervised by a fully licensed driver. A provisional license allows unsupervised driving under certain restrictions.
  • NCSDR: National Center for Sleep Disorders Research.
  • NSF: National Sleep Foundation.