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Layer: HPMS_AccessControl (ID: 10)

Name: HPMS_AccessControl

Display Field: EventID

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: The Idaho Transportation Department's (ITD) Roads and Highways Road Network Linear Referencing System (LRS) HPMS access control event polyline feature class identifies the degree to which access to a roadway facility is controlled or limited. It reflects how entry and exit points are managed along roadway segments, which directly impacts traffic flow, safety, and operational characteristics. Each segment is categorized into one of three levels of access control: full, partial, or none. Full access control allows entry only through grade-separated interchanges; partial access control permits some at-grade intersections or driveways; and no access control allows unrestricted property access and frequent intersections. This dataset is used for functional classification, design evaluation, access management, and network performance modeling. It supports transportation planners, engineers, and researchers in assessing corridor functionality and system efficiency. The data is maintained and updated annually as part of ITD’s Highway Performance Monitoring System (HPMS) submittal process to the Federal Highway Administration (FHWA) and is verified against roadway design records and the official state highway network. Users should note that access control classifications represent the current operational status of the roadway and may change over time as corridors are upgraded or reclassified.

Service Item Id: 917933986e5f4133a373cb4dc212b0b9

Copyright Text: This dataset was developed and provided by the Idaho Transportation Department (ITD). Users should credit ITD as the original source when utilizing or referencing this information in maps, reports, or applications.

Default Visibility: false

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0.0

Max Scale: 0.0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:
Drawing Info: Advanced Query Capabilities:
HasZ: true

HasM: true

Time Info:
Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:
Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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