|
|
|
Potential Use of Archived Intelligent Transportation Systems Data for Government Reporting |
| No. | Data Element | Description | Links to ITS Data Sources |
|---|---|---|---|
| 1 | Year of Data | The four digits of the calendar year for which the data apply. The HPMS software is "year 2000" compliant. | |
| 2 | State Code | The State FIPS code is used in the HPMS database to identify the reporting State. | |
| 3 | Reporting Units- Metric or English | Code for all sections to indicate the units used to report measured and other measurement related data items. All data submitted to FHWA must be in metric units; the HPMS software will automatically convert all data to metric during the FHWA submit process. The same reporting unit must be used for all applicable data items for the entire data set. There can be no mixing of units within the data set. | |
| 4 | County Code | The FIPS county code permits analysis and mapping of information at a sub-State level. Enter the three-digit FIPS county code from FIPS Publication 6-4, Counties and Equivalent Entities of the United States, Its Possessions, and Associated Areas. | |
| 5 | Section Identification | Permits locating specific roadway section data within the HPMS database. Must contain 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. May be defined to suit the needs of the State and may contain any right-justified alphanumeric character. | TMDD: "Link Identity", currently free-form text, could be used to hold HPMS Section ID |
| 6 | Is Standard Sample | Used by the software to indicate if a section is a standard sample. | |
| 7 | Is Donut Sample | Used by the software to indicate if the section is a donut sample. | |
| 8 | State Control Field | A data item of up to 100 alphanumeric characters for State use for identification or any other purpose. It may contain any keyboard characters; however, do not use binary zeros or double quotes. FHWA does not use this data item. | |
| 9 | Is Section Grouped? | Used by the software to indicate whether the data reported are for a single section or for a group of sections. | |
| 10 | LRS Identification | Permits users to reference HPMS information to the map location of road sections. Code this item for all PAS, NHS and rural minor arterial system sections, in conjunction with LRS beginning and ending points (Items 11 and 12). | TMDD: Linear referencing applied to location of events, not highway features. |
| 11 | LRS Beginning Point | Permits users to reference HPMS information to the map location of road sections. Code this item for all PAS, NHS, and rural minor arterial system section records for the purpose of establishing an LRS. | |
| 12 | LRS Ending Point | Permits users to reference HPMS information to the map location of road sections. Code this item for all PAS, NHS, and rural minor arterial system section records for the purpose of establishing an LRS. | |
| 13 | Rural/Urban Designation | Permits analysis and mapping of information at a sub-State level. | |
| 14 | Urbanized Area Sampling Technique | Used by the software to calculate expansion factors. All urbanized areas that contain a population of 200,000 persons or more, or smaller urbanized areas that are within an NAAQS non-attainment area boundary, or smaller urbanized areas that are NAAQS non-attainment areas on their own must be individually sampled. | |
| 15 | Urbanized Area Code | Permits analysis and mapping of information at the urbanized area level. | |
| 16 | NAAQS Non-attainment Area Code | Permits analysis and mapping of information for EPA designated non-attainment areas. | |
| 17 | Functional System Code | Permits analysis and mapping of information by highway functional system. | TMDD: "Link Type" has coding inconsistent (less detailed) than HPMS: Freeway, Arterial, Collector, and Local only |
| 18 | Generated Functional System Code | Encoded by the HPMS software based on the Functional System (Item 17), and is used as a software aid. | |
| 19 | National Highway System (NHS) | Facility type under NHS classifications. If more than one type is involved, use the predominant type. | |
| 20 | Planned Unbuilt Facility | Used to track changes to the approved NHS, including intermodal connectors. | |
| 21 | Official Interstate Route Number | This item, along with Items 22, 23, and 24, is used to track HPMS information by specific route. | |
| 22 | A Route Signing | This item, along with Items 21, 23, and 24, is used to track HPMS information by specific route. | TMDD: "Road Number" can be used directly, but must follow state coding rules. Route signing is included in "Road Number" but is free form text, not HPMS valid values. |
| 23 | A Route Signing Qualifier | This item, along with Items 21, 22, and 24, is used to track HPMS information by specific route. | |
| 24 | A Signed Route Number | This item, along with Items 21, 22, and 23, is used to track HPMS information by specific route. | |
| 25 | Governmental Ownership | Identifies the road owner and is used in cost allocation studies, to track historic data, and in the national highway database. | TMDD: "Link Owner" is free-form text, not HPMS valid values. |
| 26 | Special Systems | Used to track changes to the STRAHNET and is used by the Department of Defense (DOD) to identify strategic deployment routes. | |
| 27 | Type of Facility | Used to determine whether a roadway or structure is a one- or two-way operation. | TMDD: Links are defined as one-way or two-way operation, but not whether they're on a structure or not. |
| 28 | Designated Truck Route | Used as an administrative identifier to determine whether a section is on or off a truck route designated under Federal regulatory authority for truck size and weight studies. | |
| 29 | Toll | Used as an administrative identifier to determine whether a section is on or off a toll road. | |
| 30 | Section Length | Provides basic inventory information on the amount of public roads. | TMDD: "Link Length" (in meters) may be used directly, but how the links in a TMDD network match with beginning/ending points of an HPMS segment is an open question. |
| 31 | Donut Area Sample AADT Volume Group Identifier 1 | Used to identify the AADT volume group for a section when an actual AADT is not reported in Item 33. | |
| 32 | Standard Sample AADT Volume Group Identifier | Used to identify the AADT volume group for a section when an actual AADT is not reported in Item 33. | |
| 33 | AADT | Provides basic existing traffic inventory information for selected sections. | TMDD: Only link volume is provided, with no formal specification of time period. AADT may be derived from link volumes only if they are archived with appropriate time and location stamps. |
| 34 | Number of Through Lanes | Provides basic inventory information on the amount of public road supply. | TMDD: "Number of Through Lanes" on a link
can be used. NA: "number_of_lanes" reserved for this information |
| 35 | Measured Pavement Roughness (IRI) | Provides information on pavement surface roughness on selected roadway sections. | |
| 36 | Present Serviceability Rating (PSR) | Provides information on pavement condition on selected roadway sections. | |
| 37 | High Occupancy Vehicle (HOV) Operations | Used to identify those roadway sections with HOV operations. | TMDD: "Ramp Lane Type" identifies HOV, but this is not extended to link attributes. |
| 38 | Electronic Surveillance | Used to track the deployment of ITS surveillance technologies. | TMDD: "Device Type Code" can be used directly. |
| 39 | Metered Ramps | Used to track the deployment of ITS surveillance technologies. | TMDD: Links are not explicitly identified as having ramps, but there is enough detail to allow the inference to be made. |
| 40 | Variable Message Signs | Used to track the deployment of ITS surveillance technologies. | TMDD: "Device Type Code" can be used. |
| 41 | Highway Advisory Radio | Used to track the deployment of ITS surveillance technologies. | TMDD: "Device Type Code" can be used. |
| 42 | Surveillance Cameras | Used to track the deployment of ITS surveillance technologies. | TMDD: "Device Type Code" can be used. |
| 43 | Incident Detection | Used to track the deployment of ITS surveillance technologies. | TMDD: "Event Detection Method" can be used. |
| 44 | Free Cell Phone | Used to track the deployment of ITS surveillance technologies. | |
| 45 | On-Call Service Patrol | Used to track the deployment of ITS surveillance technologies. | |
| 46 | In-Vehicle Signing | Used to track the deployment of ITS surveillance technologies. | |
| 47 | Sample Identifier | A statewide or countywide unique 12-character alphanumeric code that cannot change once it has been assigned. | |
| 48 | Donut Area Sample Expansion Factor | Expansion factors are used to expand sampled data to represent the universe from which the sample is drawn. | |
| 49 | Standard Sample Expansion Factor | Expansion factors are used to expand sampled data to represent the universe from which the sample is drawn. | |
| 50 | Surface/Pavement Type | Provides the type of pavement surface on sample roadway sections. | TMDD: Can only distinguish unpaved, concrete, asphalt, open graded asphalt. NA: "pavement type" reserved for this information |
| 51 | SN or D | Provides specific information about the pavement section in terms of structural number [SN] for flexible pavement or thickness (depth) [D] for rigid pavement on sample roadway sections. | |
| 52 | General Climate Zone | A calculated value locating the sample section in one of nine climate zones. | |
| 53 | Year of Surface Improvement | Used to identify the year in which the sample section roadway surface was last improved. | |
| 54 | Lane Width | A measure of existing lane width on sample roadway sections. | |
| 55 | Access Control | A measure of the degree of access control on sample roadway sections. | |
| 56 | Median Type | A characterization of the type of median on sample roadway sections. | TMDD: HPMS codes can be translated from TMDD codes. NA: "median_type" reserved for this data |
| 57 | Median Width | A measure of existing median width on sample roadway sections. | |
| 58 | Shoulder Type | Provides information on the type of existing shoulders on sample roadway sections. | |
| 59 | Shoulder Width -Right | Measures the existing right shoulder width on sample roadway sections. | TMDD: Direct correspondence with HPMS. NA: "shoulder_width" reserved for this, although left vs. right is not distinguished |
| 60 | Shoulder Width - Left | Measures the existing left shoulder width on sample roadway sections. | TMDD: Direct correspondence with HPMS. |
| 61 | Peak Parking | Provides specific information about the presence of peak parking on urban sample roadway sections. | |
| 62 | Widening Feasibility | Provides a measure of whether it is feasible to widen an existing sample section. | |
| 63 | Length Class A Curves | Provides specific information regarding the number and length of horizontal curves by degree of curvature for sample sections. | |
| 64 | Length Class B Curves | Provides specific information regarding the number and length of horizontal curves by degree of curvature for sample sections. | |
| 65 | Length Class C Curves | Provides specific information regarding the number and length of horizontal curves by degree of curvature for sample sections. | |
| 66 | Length Class D Curves | Provides specific information regarding the number and length of horizontal curves by degree of curvature for sample sections. | |
| 67 | Length Class E Curves | Provides specific information regarding the number and length of horizontal curves by degree of curvature for sample sections. | |
| 68 | Length Class F Curves | Provides specific information regarding the number and length of horizontal curves by degree of curvature for sample sections. | |
| 69 | Horizontal Alignment Adequacy | Provides information about the adequacy of horizontal alignment when curve data are not reported. | |
| 70 | Type of Terrain | Provides information on the type of terrain through which the sample section passes. | |
| 71 | Vertical Alignment Adequacy | Provides information about the adequacy of vertical alignment when grade data are not reported. | |
| 72 | Length Class A Grades | Provides specific information regarding the number and length of vertical grades by percent gradient for sample sections. | |
| 73 | Length Class B Grades | Provides specific information regarding the number and length of vertical grades by percent gradient for sample sections. | |
| 74 | Length Class C Grades | Provides specific information regarding the number and length of vertical grades by percent gradient for sample sections. | |
| 75 | Length Class D Grades | Provides specific information regarding the number and length of vertical grades by percent gradient for sample sections. | |
| 76 | Length Class E Grades | Provides specific information regarding the number and length of vertical grades by percent gradient for sample sections. | |
| 77 | Length Class F Grades | Provides specific information regarding the number and length of vertical grades by percent gradient for sample sections. | |
| 78 | Percent Passing Sight Distance | Provides specific information on the percent of the sample section meeting the sight distance requirement for passing. | |
| 79 | Weighted Design Speed | A calculated value that provides a design speed weighted by the length of individual horizontal curves and tangents in a sample section. | TMDD: Actual design speed for each link included, not HPMS calculated weighted design speed. |
| 80 | Speed Limit | Provides information on the posted speed limit on sample sections. | TMDD: Direct correspondence with HPMS. NA: "link_speed_limit" reserved for this information |
| 81 | Percent Single Unit Trucks - Peak | Provides information on truck use on a sample section. | |
| 82 | Percent Single Unit Trucks - Average Daily | Provides information on truck use on a sample section. | |
| 83 | Percent Combination Trucks - Peak | Provides information on truck use on a sample section. | |
| 84 | Percent Combination Trucks -Average Daily | Provides information on truck use on a sample section. | |
| 85 | K-Factor | Provides the design hour volume as a percent of AADT for a sample section. | |
| 86 | Directional Factor | Provides the percent of design hour volume flowing in the peak direction on a sample section. | |
| 87 | Number of Peak Lanes | Used to provide information on the number of lanes used in the peak hour direction of flow on a sample section. | TMDD: "Number of All Open Lanes"may be used to derive this HPMS data item only if properly related to peak period in the implementation of the TMDD. |
| 88 | Left Turning Lanes/Bays | Provides information on the presence of turning lanes at a typical intersection on a sample section. | TMDD: Direct correspondence with HPMS, but information must be summarized to HPMS definition of "typical" or "controlling" intersection. |
| 89 | Right Turning Lanes/Bays | Provides information on the presence of turning lanes at a typical intersection on a sample section. | TMDD: Direct correspondence with HPMS, but information must be summarized to HPMS definition of "typical" or "controlling" intersection. |
| 90 | Prevailing Type of Signalization | Describes the predominant type of signal system on a sample section. | TMDD: Can be derived directly from "Intersection Signal Control Mode". |
| 91 | Typical Peak Percent Green Time | Provides information on the typical through lane percent green time in effect at intersections on a sample section. | TMDD: Direct correspondence with HPMS, but information must be summarized to HPMS definition of "typical" or "controlling" intersection. |
| 92 | Number At-Grade Intersections - Signals | Provides a count of the number of intersections and traffic controls on the sample section. | TMDD: Direct correspondence with HPMS, but information must be summarized to HPMS definition. |
| 93 | Number At-Grade Intersections - Stop Sign | Provides a count of the number of intersections and traffic controls on the sample section. | TMDD: Direct correspondence with HPMS, but information must be summarized to HPMS definition. |
| 94 | Number At-Grade Intersections - Other/No Control | Provides a count of the number of intersections and traffic controls on the sample section. | |
| 95 | Peak Capacity | Provides existing peak hour capacity for a sample section. | TMDD: Can be derived directly from "Link Capacity" |
| 96 | Volume/Service Flow Ratio (V/SF) | A computed value reflecting peak hour congestion for a sample section. | |
| 97 | Future AADT | Provides forecast AADT information for a sample section. | |
| 98 | Year of Future AADT | Provides the year for which the AADT has been forecast. |
