Name: EngineeringCurve_2024

Display Field:

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description:

Layer indicating the curvature of a roadway, or how much a road bends horizontally. Curvature is measured using class codes A to F to identify the amount of curvature. Refer to the HPMS Field Manual, item 43 for more details.

Important: This event layer has not been maintained or updated since 2020. Routes that have been added or altered since that time will not have reliable data.

Reported Extent: All paved principle and minor arterials (Functional System 1-4) that are included in sample panel sections and optional for other roadways. Sample panel sections are any roadways, or parts of roadways, that were identified by the Federal Highway Administration (FHWA) as requiring additional data to be reported in the 2024 HPMS report.

Copyright Text:

Min. Scale: 22286

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -114.946324604273
YMin: 31.3052259383633
XMax: -108.881999066286
YMax: 37.0251808687493
Spatial Reference: GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433],AUTHORITY["EPSG",4326]]

Drawing Info:

{"renderer":{"type":"simple","symbol":{"type":"esriSLS","style":"esriSLSSolid","color":[252,111,132,255],"width":1}},"transparency":0,"labelingInfo":null}

HasZ: true

HasM: true

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeNone

Object ID Field: OBJECTID

Unique ID Field:

Name : OBJECTID

IsSystemMaintained : True

Global ID Field:

Type ID Field:

Fields:

• OBJECTID (type: esriFieldTypeOID, alias: OBJECTID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• RouteId (type: esriFieldTypeString, alias: RouteId, SQL Type: sqlTypeOther, length: 32, nullable: true, editable: true)
• FromMeasure (type: esriFieldTypeDouble, alias: FromMeasure, SQL Type: sqlTypeOther, nullable: true, editable: true)
• ToMeasure (type: esriFieldTypeDouble, alias: ToMeasure, SQL Type: sqlTypeOther, nullable: true, editable: true)
• CurveClass (type: esriFieldTypeString, alias: CurveClass, SQL Type: sqlTypeOther, length: 1, nullable: true, editable: true)
• SHAPE__Length (type: esriFieldTypeDouble, alias: SHAPE__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Templates:

Name: New Feature
Description:
Drawing Tool: esriFeatureEditToolLine
Prototype:

Attributes:

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 11/22/2025 9:27:00 PM

Schema Last Edit Date: 9/26/2025 7:17:20 PM

Data Last Edit Date: 9/26/2025 4:07:42 PM

Supported Operations:   Query   Query Pivot   Query Top Features   Query Analytic   Query Bins   Generate Renderer   Validate SQL   Get Estimates   ConvertFormat