Highway Statistics 2006 - FHWA

Highway Statistics 2006 - Section VI: Metric Tables

Highway Statistics 2006

Section VI: Metric Tables

Table number footnotes guide.

HM-10M: PUBLIC ROAD LENGTH - 2006 - KILOMETERS BY OWNERSHIP

1/ Due to conversion from English to metric units and to rounding, individual cell values may not agree with corresponding mileage table cell values.
2/ Prior to 1999, municipal was included with other jurisdictions.
3/ Includes State park, State toll, other State agency, other local agency, and other roadways not identified by ownership.
4/ Roadways in Federal parks, forests, and reservations that are not part of the State and local highway systems.
5/ Excludes 1,268 kilometers of Federal agency owned roads.
6/ Includes 441 kilometers of miscoded non-Interstate functional system length or rural/urban categorization or both.

HM-12M: PUBLIC ROAD LENGTH - 2006 - KILOMETERS BY TYPE OF SURFACE AND OWNERSHIP/FUNCTIONAL SYSTEM NATIONAL SUMMARY

1/ Includes the 50 States, the District of Columbia and Puerto Rico. Some differences from other tables may be noted because these are estimated from sample and summary data; samples entirely on structures are not included. Due to conversion from English to metric units and to rounding, individual cell values may not agree with corresponding mileage table cell values. Indiana excludes 1,268 kilometers of Federal agency owned roads. Minnesota includes 441 kilometers of miscoded non-Interstate functional system length or rural/urban categorization or both.
2/ Paved includes the following categories: Low Type-- an earth, gravel, or stone roadway which has a bituminous surface course less than 1” thick” suitable for occasional heavy loads; Intermediate Type-- a mixed bituminous or bituminous penetration roadway on a flexible base having a surface and base thickness of less than 7”; High-Type Flexible-- a mixed bituminous or bituminous penetration roadway on a flexible base having a combined surface and base thickness of 7” or more; also includes brick, block, or combination roadways; High-Type Composite-- a mixed bituminous or bituminous penetration roadway of more than 1” compacted material on a rigid base with a combined surface and base thickness of 7” or more; High-Type Rigid-- a Portland Cement Concrete roadway with or without a bituminous wearing surface of less than 1”.
3/ Prior to 1999 included other State agency roads.

HM-14M: FEDERAL - AID HIGHWAY LENGTH - 2006 - KILOMETERS BY OWNERSHIP

1/ Due to conversion from English to metric units and to rounding, individual cell values may not agree with corresponding mileage table cell values.
2/ Prior to 1999, municipal was included with other jurisdictions.
3/ Includes State park, State toll, other State agency, other local agency, and roadways not identified by ownership.
4/ Roadways in Federal parks, forests, and reservations that are not part of the State and local highway systems.
5/ May exclude up to 1,268 kilometers of Federal agency owned roads.
6/ Includes 441 kilometers of miscoded non-Interstate functional system length or rural/urban categorization or both.

HM-15M: FEDERAL - AID HIGHWAY LENGTH - 2006 - KILOMETERS BY SYSTEM

1/ Due to conversion from English to metric units and to rounding, individual cell values may not agree with corresponding mileage table cell values.
2/ May exclude up to 1,268 kilometers of Federal agency owned roads.
3/ Includes 441 kilometers of miscoded non-Interstate functional system length or rural/urban categorization or both.

HM-16M: PUBLIC ROAD LENGTH - 2006 - KILOMETERS BY OWNERSHIP AND FEDERAL-AID HIGHWAYS NATIONAL SUMMARY

1/ Includes the 50 States, the District of Columbia, and Puerto Rico. Due to conversion from English to metric units and rounding,
individual calls may not agree with corresponding mileage table cell values. Indiana excludes up to
1,268 kilometers of Federal agency owned roads. Minnesota includes 441 kilometers of non-Interstate functional system length or
rural/urban categorization or both.
2/ Prior to 1999, municipal was included with other jurisdictions.

HM-20M: PUBLIC ROAD LENGTH - 2006 - KILOMETERS BY FUNCTIONAL SYSTEM

1/ Due to conversion from English to metric units and to rounding, individual cell values may not agree with corresponding mileage table cell values.
2/ Excludes 1,268 kilometers of Federal agency owned roads.
3/ Includes 441 kilometers of miscoded non-Interstate functional system length or rural/urban categorization or both.

HM-30M: NATIONAL HIGHWAY SYSTEM LENGTH - 2006 - KILOMETERS OPEN AND NOT OPEN TO TRAFFIC

1/ Due to conversion from English to metric units and to rounding, individual cell values may not agree with corresponding mileage table cell values.
2/ May exclude up to 1,268 kilometers of Federal agency owned roads.
3/ Includes 441 kilometers of miscoded non-Interstate functional system length or rural/urban categorization or both.

HM-36M: FEDERAL - AID HIGHWAY LENGTH - 2006 - KILOMETERS BY TRAFFIC LANES AND ACCESS CONTROL NATIONAL SUMMARY

1/ Includes the 50 States, the District of Columbia, and Puerto Rico. Due to conversion from English to metric units and to rounding, individual
cell values may not agree with corresponding mileage table cell values. Indiana excludes up to 1,268 kilometers of Federal agency roads.
Includes 441 kilometers of miscoded non-Interstate functional system length or rural/urban categorization or both.
2/ Some differences from other tables may be noted because these are estimated from sample data and to not include samples entirely on structures.
3/ Differences may exist from prior years due to the redefinition of divided and undivided roadways in 1999.

HM-50M: FUNCTIONAL SYSTEM LENGTH - 2006 - KILOMETERS BY OWNERSHIP

1/ Due to conversion from English to metric units and to rounding, individual cell values may not agree with corresponding mileage table cell values.
2/ Prior to 1999, municipal was included with other jurisdictions.
3/ Includes State park, State toll, other State agency, other local agency, and roadways not identified by ownership.
4/ Roadways in Federal parks, forests, and reservations that are not a part of the State and local highway system.
5/ Excludes 1,268 kilometers of Federal agency roads.
6/ Includes 441 kilometers of miscoded non-Interstate functional system length or rural/urban categorization or both.

VM-2M: FUNCTIONAL SYSTEM TRAVEL - 2006 - ANNUAL VEHICLE - KILOMETERS

1/ Travel for all systems are FHWA estimates based on State provided HPMS data. Due to conversion from English to metric units and to rounding, individual cell values may not
agree with corresponding vehicles-miles table cell values.
2/ Excludes 1,268 kilometers of Federal agency owned roads.
3/ Includes 441 kilometers of miscoded non-Interstate functional system length or rural/urban categorization or both.

VM-3M: FEDERAL-AID HIGHWAY TRAVEL - 2006 - ANNUAL VEHICLE - KILOMETERS

1/ Travel for all systems are FHWA estimates based on State provided HPMS data. Due to conversion from English to metric units and to rounding, individual cell values may not
agree with corresponding vehicle-miles table cell values.
2/ Excludes 1,268 kilometers of Federal agency owned roads.
3/ Includes 441 kilometers of miscoded non-Interstate functional system length or rural/urban categorization or both.

If you have specific questions regarding Mileage and Travel, email us or phone (202) 366-0160.

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