U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000
Definition: The arithmetic mean (average) of all observed vehicle speeds in the segment (i.e., the sum of all spot speeds divided by the number of recorded speeds).
Attributes: mph
Priority: Value added (Difficult to collect for all sections; see discussion in Introduction)
HPMS/Tool Requirements: None