MMUCC Training

RL5. Roadway Functional Class

Definition:

The character of service or function of streets or highways. The classification of rural and urban is determined by State and local officials in cooperation with each other and approved by the Federal Highway Administration, U.S. Department of Transportation.

Source: Obtained by linking Crash Location (C5) to the Roadway Inventory data.

Element Attributes:
Rural:
  • Principal Arterial-Interstate
  • Principal Arterial-Other
  • Minor Arterial
  • Major Collector
  • Minor Collector
  • Local
  • Unknown Rural
Urban:
  • Principal Arterial-Interstate
  • Principal Arterial-Other Freeway or Expressway
  • Principal Arterial-Other
  • Minor Arterial
  • Collector
  • Local
  • Unknown Urban
Unknown
Rationale:

Important for comparing crash rates/safety experience of highways of similar design characteristics so as to identify those highways or highway sections that have abnormal rates/experience for future improvements as well as generalized study of the highways in a region or State. Knowledge of the land use is needed in analyzing crashes as part of a network analysis.