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Layer: NCDOT_AADT_Stations (ID:0)

View In:   Map Viewer

Name: NCDOT_AADT_Stations

Display Field: LocationID

Type: Feature Layer

Geometry Type: esriGeometryPoint

Description: <div style="text-align:Left;"><div><div><p style="margin:0 0 11 0;"><span>The AADT file is a station point location of Annual Average Daily Traffic (AADT) estimates. This includes the data submitted to FHWA for Highway Performance Monitoring System (HPMS) AADT reporting for 2021. Data are reported for AADT on all highways with a Functional Classification (FC) above Local. A full coverage is provided for these routes where AADT segmentation is based on network configuration, travel patterns, and land use. The extent of highway this AADT represents has not been determined. An AADT is an Annual Average Daily Traffic volume for all lanes in both directions passing a point on the highway system. It represents the average of all days during the year with typical traffic conditions. An AADT estimate is generated using procedures that comply with the standards specified in the Traffic Monitoring Guide published by the Federal Highway Administration. There are over 44,000 AADT stations that provide traffic data history from 2002 to the current year. With these collection locations, Traffic Survey has adopted the following data collection schedule: Interstate route volumes are collected on an annual basis; US and NC route volumes are also collected on an annual basis except for stations that fall within the off-cycle urban areas. (See urban area cycle below.) Secondary Road (SR) volumes are collected on a biennial cycle with approximately half being counted each year. If a particular secondary road is not available for the most current year, it may be available for the prior year. North Carolina's eighteen largest urban areas are counted on a biennial cycle with 10 urban areas counted during the even years, and 8 urban areas counted during the odd years. The following urban areas are collected during the even year cycle: Asheville, Charlotte, Concord-Kannapolis, Fayetteville, Gastonia, Goldsboro, Greenville, and Jacksonville. The following urban areas are collected during the odd year cycle: Burlington, Chapel Hill, Durham, Greensboro, Hickory, High Point, Raleigh, Rocky Mount, Wilmington, and Winston-Salem. Data in this file derives from NCDOT Roads &amp; Highways, Quarter 1 publication of the current calendar year. The referencing provided is based on the </span><span><span>2022 Quarter1</span></span><span><span>publication of the NCDOT Linear Referencing System (LRS). Some differences will be found when using different quarterly publications with this data set. The data provided is seasonally factored to an estimate of an annual average of daily traffic. The statistics provided are Location_ID - 10-digit unique count location identifier, ROUTE: Numbered route identifier, or local name if not State maintained, LOCATION: Description of the Annual Average Daily Traffic station location. </span></span></p><p style="margin:0 0 11 0;"><span>Note: A value of zero in the AADT field indicates no available AADT data for that year. Please note the following: Not ALL roads have PTC stations located on them. Except for Interstate, NC and US routes, NCDOT County Maps refer to roads using a four-digit Secondary Road Number, not a road’s local name. If additional information is needed, or an issue with the data is identified, please contact the Traffic Survey Group at (919) 707-0936. Disclaimer related to the spatial accuracy of this file: This data cannot be construed to be a legal document.</span></p></div></div></div>

Copyright Text: Traffic Survey Group, Transportation Planning Division, NCDOT

Min. Scale: 500000

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

Drawing Info:

HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: FID

Unique ID Field:

Global ID Field:

Type ID Field: RTE_CLS

Fields:
Types:

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 11/16/2023 11:07:13 PM

Schema Last Edit Date: 11/6/2023 10:47:49 PM

Data Last Edit Date: 11/6/2023 10:47:49 PM

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