U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
Definition: The total number of through lanes on the segment. This excludes auxiliary lanes, such as collector-distributor lanes, weaving lanes, frontage road lanes, parking and turning lanes, acceleration/deceleration lanes, toll collection lanes, shoulders, and truck climbing lanes.
HPMS/Tool Requirements: HPMS (Full Extent and Ramps), HSM/IHSDM (Required), SafetyAnalyst (Required)