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Office of Highway Policy Information
March 2013

Field Manual
Appendix E. HPMS Data Used for Apportionment

FIPS PUB 5-2, Federal Information Processing Standard Publication, 1987 May 28, U.S. Department of Commerce, National Bureau of Standards.

HPMS is the official source of data on the extent, condition, performance, use, and operating characteristics of the nation’s highways. Certain data items are provided for all public roads, including length, lane-miles, and travel, which are used in the apportionment of Federal-Aid highway funds.

Table E-1 provides information on how HPMS data are used in the Federal-Aid Highway Program apportionment formula.

Table E.1 HPMS Data Used for Apportionment

Fund Factors Weight
Interstate Maintenance Interstate System Lane Miles 33 1/3%
Vehicle Miles Traveled on the Interstate System 33 1/3%
National Highway System (NHS) Lane Miles of Principal Arterial Highways (excluding Interstate System) 25%
Vehicle Miles Traveled on Principal Arterial Highways (excluding Interstate System) 35%
Total Lane Miles of Principal Arterial Highways divided by the State’s Population 10%
Surface Transportation Program (STP) Lane Miles of Federal-aid Highways 25%
Vehicle Miles Traveled on Federal-aid Highways 40%
Highway Safety Improvement Programs Lane-Miles of Federal-aid Highways 33 1/3%
Vehicle-Miles Traveled on Federal-aid Highways 33 1/3%
State and Community Highways Safety Grants Public Road Miles (should be consistent with Certified Mileage) 25%

 

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