Roadway Extent, Characteristics, and Performance

Highway Statistics

Note that for some tables, multiple versions may exist depending upon when they were produced with respect to the annual Highway Statistics published version, an update, or an update to the table in its respective Summary file(s). The date on each individual table distinguishes it from a version(s) that may have been produced on a different date.

• Public Road Length in the United States, Classified By:
  • Ownership
  • Type of surface and ownership/functional system (national summary)
  • Ownership and Federal-aid highways (national summary)
  • Functional system and Federal-aid highways (national summary)
  • Functional system
• Federal-aid Highway Data
  • Ownership
  • System
  • Type of surface
  • Lane width
  • Traffic lanes and access control
  • Traffic lanes and access control (national summary)
  • Average daily traffic volume
  • Lane width, access control, & average daily traffic volume (national summary)
  • Lane-miles, estimated
• National Highway System (NHS) Data
  • Open and not open to traffic
  • NHS road length, miles by ownership
  • NHS miles by functional system
  • Volume-service flow ratio
  • NHS lanes miles by functional system
  • NHS vehicle miles of travel by functional system
  • Measured pavement roughness
  • STRAHNET length, Interstate and Other
• Functional System Data
  • Ownership
  • Arterial and collector length, classified by:
    • Type of surface
    • Lane width
    • Traffic lanes and access control
    • Average daily traffic volume
    • Lane width, access control, & average daily traffic volume (national summary)
  • Lane-miles, estimated
  • Volume-service flow ratio
  • Average daily traffic per lane
  • System congestion trends
  • Present serviceability ratings--pavements
  • Measured pavement roughness
  • Pavement Roughness Details
• Urbanized Area Summaries
  • Miles and daily vehicle-miles of travel
  • Selected characteristics
• State Highway Agency-owned Public Road Data
  • Miles by functional system, estimated
  • Miles, lane miles and daily travel, estimated
• Traffic and Travel Data
  • Vehicle miles of travel and related data, by highway category and vehicle type
  • Vehicle-miles of travel, by functional system
  • Discussion of travel growth Discussion Discussion
  • Vehicle-miles of travel, by Federal-aid highway
  • Percentage distribution of traffic volumes and loadings on the rural Interstate system
  • Comparison of growth in volumes and loadings on the Interstate system
• Motor Vehicle Traffic Fatalities
  • Persons fatally injured in motor vehicle crashes, by Federal-aid highways
  • Persons fatally injured in motor vehicle crashes, by Functional system