Abstract: Abstract: The Federal Highway Administration (FHWA) has the responsibility to assure that adequate highway transportation information is available to support its functions and responsibilities, including those of the Administration and the Congress. The primary purpose of the Highway Performance Monitoring System (HPMS) is to serve these data and information needs. The HPMS provides data that reflects the extent, condition, performance, use, and operating characteristics of the nation's highways. The HPMS by itself is not geospatial data. It is linked to another FHWA dataset, the National Highway Planning Network (NHPN), through linear referencing. The NHPN provides the geospatial component of this dataset.

Purpose: Purpose: The HPMS provides data that reflects the extent, condition, performance, use, and operating characteristics of the nation's highways. It supports informed highway planning, policy making, and decision making at the national, state, and local levels.

Field Number	Attribute	Description	Data Type
0	FID	Internal feature number.	Long Integer representing an object identifier
1	Shape	Feature geometry.	Geometry
2	METRIC	Indicates the units used to report measured and other measurement related data items.	Double Precision Floating Point
3	SECTION_ID	This item permits locating specific roadway section data within the HPMS database. This item must con-tain a 12-character countywide unique identifier. It provides flexibility to identify sections in accordance with a State's needs independent of the unique identifier that must be maintained for sample sections. This item may be defined to suit the needs of the State and may contain any right-justified alphanumeric character.	Character String
4	RUR_URB	Defines whether the section is in a rural or urban area.	Double Precision Floating Point
5	URB_CODE	The numeric urbanized area code for sections within an urbanized area boundary when the RUR_URB attribute is coded "3" or "4".	Double Precision Floating Point
6	NONATTAIN	The numeric urbanized area code for the Environmental Protection Agency-named National Ambient Air Quality Standards (NAAQS) nonattainment area for all rural, small urban, and urbanized area sections within the NAAQS nonattainment area boundary. When more than one urbanized area is within the nonattainment area boundary, the most populous urbanized area is coded.	Double Precision Floating Point
7	F_SYSTEM	the functional system upon which the section is located.	Double Precision Floating Point
8	NHS	Indicates whether the section is on the National Highway System (NHS) or is an NHS connector to an intermodal facility.	Double Precision Floating Point
9	INTER_NUM	The officially approved American Association of State Highway and Transportation Officials/FHWA Interstate route number.	Character String
10	SIGNING	The value which best represents the manner in which the highway segment is signed with route markers.	Double Precision Floating Point
11	QUALIFIER	The value which best represents the manner in which the highway segment is signed on the route marker described in the SIGNING attribute.	Double Precision Floating Point
12	ROUTE_NUM	Alphanumeric value for the signed route number shown on the marker described in the attributes SIGNING and QUALIFIER.	Character String
13	OWNERSHIP	The level of government that best represents the highway owner irrespective of whether agreements exist for maintenance or other purposes. The purpose of this item is to identify the owner of public roads.	Double Precision Floating Point
14	SPECIAL	Indicates whether the section is on the STRAHNET or a STRAHNET connector.	Double Precision Floating Point
15	TYPE_FAC	This item is used to determine whether a roadway or structure is a one- or two-way operation	Double Precision Floating Point
16	TRK_RTE	This item is used in truck size and weight studies as an administrative identifier to determine whether a section is on or off a truck route designated under Federal regulatory authority.	Double Precision Floating Point
17	TOLL	This item is used as an administrative identifier to determine whether a section is on or off a toll road.	Double Precision Floating Point
18	SEC_LENGTH	Length, in kilometers or miles (depending upon the METRIC attribute), as measured along the centerline of the roadway.	Double Precision Floating Point
19	AADT	Annual Average Daily Traffic	Double Precision Floating Point
20	THRU_LANES	Number of Through Lanes	Double Precision Floating Point
21	IRI	Measured Pavement Roughness based on the Internation Roughness Index (IRI).	Double Precision Floating Point
22	YEAR	The year of the HPMS data.	Integer
23	STFIPS	State FIPS Code	Character String
24	CTFIPS	County FIPS Code (3 digit). Can be combined with STFIPS to obtain 5-digit County FIPS Code.	Character String
25	VERSION	Version of the database	Character String
26	REVISION	Revision of the database	Character String