HPMS Road Sections
The road sections Ohio reports to the Federal Highway Administration (FHWA) each year for the Highway Performance Monitoring System (HPMS), the national record of the extent, condition, performance and use of public roads: every section of every public road, with its owner, its functional class nearly everywhere, and its membership in the National Highway System and the freight networks, and, where the state reports them (on federal-aid highways and most collectors), number of lanes, speed limit and annual average daily traffic (AADT). On sample sections and the National Highway System it adds truck volumes (some states report them wherever they report traffic) and pavement condition (roughness, rutting, faulting and cracking), and on sample sections lane widths, the traffic forecast, pavement structure, signals, turn lanes, parking, curves, grades and how much the road could be widened. Good for traffic and truck volumes on a corridor, pavement condition and the federal pavement measures on the Interstate and National Highway System, lane-miles and vehicle-miles traveled by road class or county, and comparing Ohio with other states.
- Published by
- Federal Highway Administration, Office of Highway Policy Information
- Source
- HPMS (FHWA Highway Performance Monitoring System)
- Original data
- geo.dot.gov
- Terms of use
- Public domain; citation as to source is required
- On the map
- Lines
From the publisher
The HPMS is a national level highway information system that includes data on the extent, condition, performance, use and operating characteristics of the nation's highways. The HPMS contains administrative and extent of system information on all public roads, while information on other characteristics is represented in HPMS as a mix of universe and sample data for arterial and collector functional systems. Limited information on travel and paved miles is included in summary form for the lowest functional systems.
Ask your own question about Ohio
Fields
What each record holds, as the publisher describes it: 132 fields.
| Field | Description |
|---|---|
data_year | HPMS data year, the year the state's submission describes |
(service) | State code, OH |
state_id, county_id | County FIPS code, five digits; joins oh_census_counties.geoid |
route_id | The state's route identifier in its linear referencing system |
begin_point | Milepoint on the route where the section begins, miles |
end_point | Milepoint on the route where the section ends, miles |
section_length | Section length, miles |
route_number | Signed route number |
route_name | Route or street name, as the state gives it |
route_signing | How the route is signed: Interstate, U.S., State, County, Township, Municipal, … |
route_signing | The same, as FHWA's code |
route_qualifier | Route marker qualifier: Alternate, Business route, Bypass business, Spur, Loop, Truck route, … |
route_qualifier | The same, as FHWA's code |
f_system | FHWA functional classification: Interstate, Principal arterial - other freeways and expressways, Principal arterial - other, Minor arterial, Major collector, Minor collector, Local |
f_system | The same, as FHWA's code |
urban_id | Census urban area code, five digits; 99998 is a small urban area and 99999 rural |
facility_type | One-way roadway, Two-way roadway, Ramp, Non-mainline, Non-inventory direction, Planned or unbuilt |
facility_type | The same, as FHWA's code |
structure_type | Bridge, Tunnel or Causeway where the section is one; NULL otherwise |
structure_type | The same, as FHWA's code |
ownership | Who owns the road: State highway agency, County highway agency, Town or township highway agency, City or municipal highway agency, … |
ownership | The same, as FHWA's code |
maintenance_operations | Who maintains and operates the road, in the same words as ownership |
maintenance_operations | The same, as FHWA's code |
is_restricted | FHWA's restricted-access flag, as published |
nhs | On the National Highway System: NHS, not a connector or the kind of intermodal connector; NULL off the NHS |
nhs | The same, as FHWA's code |
strahnet_type | Regular STRAHNET or STRAHNET connector (the Strategic Highway Network); NULL off it |
strahnet_type | The same, as FHWA's code |
nn | National Network for large trucks, or Other state-designated truck route; NULL off both |
nn | The same, as FHWA's code |
nhfn | Part of the National Highway Freight Network: Primary Highway Freight System, Interstate not on the Primary Highway Freight System, Critical Rural Freight Corridor or Critical Urban Freight Corridor; NULL off it |
nhfn | The same, as FHWA's code |
through_lanes | Through lanes, both directions on a two-way roadway |
dir_through_lanes | Through lanes in the inventory direction, where the state reports it |
managed_lanes_type | Full-time managed lanes, Part-time managed lanes (through lanes) or (shoulder or parking lane), where there are managed lanes (HOV, HOT, express toll) |
managed_lanes_type | The same, as FHWA's code |
managed_lanes | Number of managed lanes |
peak_lanes | Lanes in the peak direction during the peak period |
counter_peak_lanes | Lanes in the counter-peak direction during the peak period |
toll_id | FHWA's identifier of the toll facility the section is on, where it is one |
lane_width | Lane width, feet |
median_type | None, Unprotected, Curbed, Positive barrier (unspecified, flexible, semi-rigid or rigid) |
median_type | The same, as FHWA's code |
median_width | Median width, feet |
shoulder_type | None, Bituminous concrete (asphalt), Portland cement concrete, Stabilized, Combination of surface types, Earth, Barrier curb |
shoulder_type | The same, as FHWA's code |
shoulder_width_r | Right shoulder width, feet |
shoulder_width_l | Left (median) shoulder width on a divided road, feet |
peak_parking | Parking during the peak period: one side, both sides, or none |
peak_parking | The same, as FHWA's code |
turn_lanes_r | Right-turn lanes at a typical intersection in the peak period |
turn_lanes_r | The same, as FHWA's code |
turn_lanes_l | Left-turn lanes at a typical intersection in the peak period |
turn_lanes_l | The same, as FHWA's code |
signal_type | Predominant signal system: Uncoordinated fixed time, Uncoordinated traffic actuated, Coordinated progressive, Coordinated real-time adaptive, No signal system |
signal_type | The same, as FHWA's code |
pct_green_time | Share of the signal cycle that is green for through traffic at a typical signal, percent |
number_signals | Signalized intersections on the section (inventory direction) |
stop_signs | Stop-sign-controlled intersections on the section |
at_grade_other | Other at-grade intersections on the section |
speed_limit | Posted speed limit, mph |
access_control | Full access control, Partial access control or No access control |
access_control | The same, as FHWA's code |
aadt | Annual average daily traffic, both directions, vehicles a day |
aadt_vt | The state's own one-letter note on the AADT value (a field FHWA leaves to each state), as published |
aadt_vd | When the AADT value dates from, as the state gives it |
aadt_single_unit | AADT of single-unit trucks and buses |
aadt_single_unit_vt | The state's own note on that value, as published |
aadt_single_unit_vd | When that value dates from |
aadt_combination | AADT of combination trucks |
aadt_combination_vt | The state's own note on that value, as published |
aadt_combination_vd | When that value dates from |
pct_dh_single | Peak-hour single-unit truck and bus volume as a percent of AADT |
pct_dh_combination | Peak-hour combination truck volume as a percent of AADT |
k_factor | Design-hour volume (the 30th highest hour of the year) as a percent of AADT |
dir_factor | Share of design-hour traffic in the peak direction, percent (100 on a one-way road) |
future_aadt | Forecast AADT for future_aadt_year |
future_aadt_vd | The year future_aadt forecasts, about 20 years out |
iri | International Roughness Index, inches per mile; lower is smoother |
iri_vt | Why an NHS section has no newly measured IRI: Construction, Closure, Disaster, Too deteriorated to measure (rated poor) |
iri_vt | The same, as FHWA's code |
iri_vd | When the IRI was measured (month) |
psr | Present Serviceability Rating, 0 to 5, reported where IRI is not (mainly roads under 40 mph) |
psr_vt | Why an NHS section has no PSR, in the same words as iri_missing_reason |
psr_vt | The same, as FHWA's code |
psr_vd | When the PSR was rated |
surface_type | Pavement surface: Unpaved, Bituminous, jointed or continuously reinforced concrete, asphalt or concrete overlays, Other |
surface_type | The same, as FHWA's code |
rutting | Average rut depth on asphalt pavement, inches |
rutting_vt | Why an NHS section has no rutting value |
rutting_vt | The same, as FHWA's code |
rutting_vd | When rutting was measured |
faulting | Average faulting at joints on jointed concrete pavement, inches |
faulting_vt | Why an NHS section has no faulting value |
faulting_vt | The same, as FHWA's code |
faulting_vd | When faulting was measured |
cracking_percent | Share of the pavement that is cracked, percent (of the wheel-path area on asphalt, of slabs on jointed concrete) |
cracking_percent_vt | Why an NHS section has no cracking value |
cracking_percent_vt | The same, as FHWA's code |
cracking_percent_vd | When cracking was measured |
year_last_improvement | Year the pavement last had an improvement (resurfacing or more) |
year_last_construction | Year the pavement was built or last reconstructed |
last_overlay_thickness | Thickness of the last overlay, inches |
thickness_rigid | Thickness of the concrete layer, inches |
thickness_flexible | Thickness of the asphalt layers, inches |
base_type | Base under the surface: No base, Aggregate, Asphalt or cement stabilized, Hot mix asphalt, Lean concrete, Stabilized open-graded permeable, Fractured concrete |
base_type | The same, as FHWA's code |
base_thickness | Base thickness, inches |
soil_type | Subgrade soil: Granular or Fine (silt-clay) |
soil_type | The same, as FHWA's code |
widening_potential | Through lanes that could feasibly be added, both directions; 9 means nine or more |
widening_potential_vt | What stands in the way of widening, every one that applies, joined by "; ": No obstacles, Dense development, Major transportation facilities, Other public facilities, Terrain restrictions, Historic and archaeological sites, Environmentally sensitive areas, Parkland |
widening_potential_vt | The same, as FHWA's code |
terrain_type | Level, Rolling or Mountainous (rural sample sections) |
terrain_type | The same, as FHWA's code |
curves_a | Miles of the section with curvature under 3.5 degrees |
curves_b | Miles with curvature 3.5 to 5.4 degrees |
curves_c | Miles with curvature 5.5 to 8.4 degrees |
curves_d | Miles with curvature 8.5 to 13.9 degrees |
curves_e | Miles with curvature 14 to 27.9 degrees |
curves_f | Miles with curvature 28 degrees or more |
grades_a | Miles of the section with a grade of 0 to 0.4 percent |
grades_b | Miles with a grade of 0.5 to 2.4 percent |
grades_c | Miles with a grade of 2.5 to 4.4 percent |
grades_d | Miles with a grade of 4.5 to 6.4 percent |
grades_e | Miles with a grade of 6.5 to 8.4 percent |
grades_f | Miles with a grade of 8.5 percent or more |
pct_pass_sight | Share of the section with passing sight distance, percent (rural two-lane sample sections) |
travel_time_code | The National Performance Management Research Data Set (NPMRDS) segment code (TMC) the section lies on, where the state reports it |
sample_id | The section's sample panel identifier, where it is a sample section; NULL otherwise |
expansion_factor | The sample section's expansion factor: its stratum's total length divided by the stratum's sampled length (a ratio, not miles) |
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