U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000
Definition: The regulatory speed limit for vehicles at night posted or legally mandated on the greater part of the section (i.e., differential speed limit).
Attributes: mph
Note: Only code if the speed limit is different at night than during the day.
Priority: Value Added
HPMS/Tool Requirements: None