MDOT SHA Annual Average Daily Traffic (AADT) Locations [Maryland] Full Details

Full Details

Title:

MDOT SHA Annual Average Daily Traffic (AADT) Locations [Maryland]

Description:

Esri ArcGIS Online (AGOL) Hosted Feature Layer for accessing the MDOT SHA Annual Average Daily Traffic (AADT) data product.MDOT SHA Annual Average Daily Traffic (AADT) data consists of linear & point geometric features which represent the geographic locations & segments of roadway throughout the State of Maryland that include traffic volume metrics. Traffic volume metrics are produced from traffic count information used to calculate annual average daily traffic (AADT), annual average weekday traffic (AAWDT), AADT based on vehicle class (currentyear only) for roadways throughoutthe State. Overall percent utilization, percent utilization based on vehicle class, and truck-specific percent utilization are showcased as statistical metrics for each geographic location or segment of roadway throughout the State, where applicable. Ten (10) years of historic AADT & AAWDT traffic volume metrics are also availablefor each geographic location or segment of roadway throughout the State, where applicable.Annual Average Daily Traffic (AADT) data is collected from over 8700 program count stations and 84 ATRs, located throughout Maryland. The quality control feature of the system allow data edit checks and validation for data from the 91 permanent, continuous automatic traffic recorders (ATRs) and short-term traffic counts. Program count data is collected in both directions (inventory & non-inventory) at regular locations on either a three (3) year or six (6) year cycle depending on the type of roadway. Growth factors are applied to counts which were not taken during the current year and the counts are factored based on the past yearly growth of an associated ATR. Counters are placed for 48 hours on a Monday or Tuesday and are picked up that Thursday or Friday, respectively. The ATR and toll count data is collected on a continuous basis. Toll station data is provided by the Maryland Transportation Authority (MDTA). A special numeric code was added to the AADT numbers, starting in 2006, to identify the years when the count was actually taken. The last digit represents the number of years prior to the actual count. Where "0" represents the current year when data was collected (in 2020), "1" represents the count taken in 2019, "2" represents the count taken in 2018, "3" represents the count taken in 2017 and so forth.Annual Average Daily Traffic (AADT) data is a strategic resource for the Federal Highway Administration (FHWA), the Maryland Department of Transportation (MDOT), the Maryland Department of Transportation State Highway Administration (MDOT SHA), as well as many other Federal, State & local government agencies. The data is essential in the planning, design and operation of the statewide road system and the development & implementation of State highway improvement & safety programs. The MDOT SHA Traffic Monitoring System (TMS) is a product of the ISTEA Act of 1991, which required a traffic data program to effectively & efficiently meet MDOT SHA's long-term traffic data monitoring & reporting requirements.Annual Average Daily Traffic (AADT) data is updated and published on an annual basis for the prior year. This data is for the year 2021.View the most current AADT data in theMDOT SHA Annual Average Daily Traffic (AADT) LocatorFor more AADT data information, contact MDOT SHA Traffic Monitoring System (TMS):Email:TMS@mdot.maryland.govFor more general information, contact MDOT SHA OIT Enterprise Information Services:Email:GIS@mdot.maryland.gov

Creator:

ArcGIS Online for Maryland

Provider:

Maryland iMap

Resource Class:

Datasets and Web services

Resource Type:

Vector data

Temporal Coverage:

Continually updated resource

Date Issued:

2020-06-02

Place:

Maryland

Rights:

This data is provided “AS IS” without warranty of any kind, either expressed or implied. The Maryland Department of Transportation assumes no responsibility for errors or omissions in this data or other documents which are referenced by or linked to this data. In no event shall the Maryland Department of Transportation (MDOT) be liable for any special, incidental, indirect, or consequential damages of any kind, or any damages whatsoever, including, without limitation, those resulting from loss of use, data or profits, whether or not advised of the possibility of damage, and on any theory of liability, arising out of or in connection with the user or performance of this information. This data could contain technical or other inaccuracies or typographical errors. The Maryland Department of Transportation (MDOT) may make improvements and/or changes in the product(s) and/or the program(s) described in this publication at any time.

Access Rights:

Public

Format:

Shapefile

Language:

English

Date Added:

2023-03-08