U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
Definition: The presence and type of auxiliary lane present on the segment. Center two-way left turn lanes and HOV lanes are not included here. They are included under Element 54. Median Type and Elements 37. HOV Lane Types and 38. HOV Lanes respectively.
HPMS/Tool Requirements: HSM/IHSDM (Required), SafetyAnalyst (Required)