U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
Definition: An identifier for each ramp that is part of a given interchange. This defines which ramp the following elements are describing.
Attributes: Alphanumeric (e.g., each set of interchange ramps could begin with "1" or "A", each ramp could be indentified by it's route and exit number, etc.).
HPMS/Tool Requirements: SafetyAnalyst (Required)