Roadway Acceleration Lanes 2025, Washington State Department of Transportation

Identification_Information:

Citation:

Citation_Information:

Originator: Washington State Department of Transportation
Publication_Date: 20261005
Title:

Geospatial_Data_Presentation_Form: vector digital data

Description:

Abstract:

This is an extract from the State Highway Log that shows lanes designated for acceleration movements at intersection locations. State Route identifiers and locations based on State Route Mileposts and Accumulated Route Mileage are also included for geographic reference and for use with the Washington State Department of Transportation's 24k and 500k Linear Referencing Systems. Please direct questions about this dataset to: TransportationGISDataSteward@wsdot.wa.gov.

Purpose:

To enable Geographic Information System users to more easily display and analyze a subset of the data contained in the State Highway Log in conjunction with the Washington State 24k and 500k Linear Referencing Systems.

Supplemental_Information:

This data reflects the corresponding State Highway Log Planning Report published annually by WSDOT.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20251231

Currentness_Reference: ground condition

Status:

Progress: Complete
Maintenance_and_Update_Frequency: Annually

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -124.472690
East_Bounding_Coordinate: -116.994354
North_Bounding_Coordinate: 48.955587
South_Bounding_Coordinate: 45.523604

Keywords:

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: Highway Data
Theme_Keyword: State Route Data
Theme_Keyword: Acceleration
Theme_Keyword: Road Log
Theme_Keyword: State Highway Log
Theme_Keyword: TRIPS
Theme_Keyword: Lane

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: transportation

Access_Constraints: None
Use_Constraints:

The Washington State Department of Transportation shall not be liable for any activity involving this data with regard to lost profits or savings or any other consequential damages; or the fitness for use of the data for a particular purpose; or the installation of the data, its use, or the results obtained.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Washington State Department of Transportation (WSDOT)
Contact_Person: Transportation GIS Data Steward

Contact_Position: Transportation GIS Data Steward
Contact_Address:

Address_Type: mailing
Address: PO Box 47380
City: Olympia
State_or_Province: WA
Postal_Code: 98504-7380
Country: US

Contact_Electronic_Mail_Address: TransportationGISDataSteward@wsdot.wa.gov
Contact_Instructions: Contact by e-mail is preferred.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Washington State Department of Transportation (WSDOT)
Contact_Person: Transportation GIS Data Steward

Contact_Position: Transportation GIS Data Steward
Contact_Address:

Address_Type: mailing
Address: PO Box 47380
City: Olympia
State_or_Province: WA
Postal_Code: 98504-7380
Country: US

Contact_Electronic_Mail_Address: TransportationGISDataSteward@wsdot.wa.gov.
Contact_Instructions: Contact by e-mail is preferred.

Data_Set_Credit: Washington State Department of Transportation
Native_Data_Set_Environment: Version 6.2 (Build 9200) ; Esri ArcGIS 10.9.1.28388

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Values were obtained from the Transportation Information and Planning Support (TRIPS) database.

Completeness_Report:

The data contained within the State Highway Log is collected and updated using contract plans, field reviews and information provided by numerous WSDOT Regional and Headquarters offices as well as other county and city sources over the course of a year. This data may have changed since the publication date. Only those records that have a RouteID (Route Identifier) found in the Washington State Highways at 24K Linear Referencing System can be graphically placed as events. RouteIDs that have been added or revised since the completeness date of the LRS will not place, nor will RouteIDs for road features not carried by the LRS.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report: Positional accuracy of this data set has not been determined

Lineage:

Process_Step:

Process_Description:

The Roadway Datasets are extracted from the Roadway Datamart using SQL queries and stored as Excel spreadsheets. These spreadsheets are placed as events on the StateRouteLRS data layer using the ArcGIS Display Route Events function with route names that include the direction of travel ( i, d). The event layers are converted to feature classes and loaded into an SDE database for publication.

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Washington State Department of Transportation (WSDOT)
Contact_Person: Transportation GIS Data Steward

Contact_Position: Transportation GIS Data Steward
Contact_Electronic_Mail_Address: TransportationGISDataSteward@wsdot.wa.gov.

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Entity point
Point_and_Vector_Object_Count: 432

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: NAD 1983 HARN StatePlane Washington South FIPS 4602 Feet
Lambert_Conformal_Conic:

Standard_Parallel: 45.83333333333334
Standard_Parallel: 47.33333333333334
Longitude_of_Central_Meridian: -120.5
Latitude_of_Projection_Origin: 45.33333333333334
False_Easting: 1640416.666666667
False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:

Abscissa_Resolution: 0.0003280833333333333
Ordinate_Resolution: 0.0003280833333333333

Planar_Distance_Units: foot_us

Geodetic_Model:

Horizontal_Datum_Name: D North American 1983 HARN
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: AccelerationLanes_2025
Entity_Type_Definition:

Lanes designated for acceleration movements at intersection locations.

Attribute:

Attribute_Label: AccelerationLaneLength
Attribute_Definition: Length, in miles, of the acceleration lane.
Attribute_Definition_Source: WSDOT

Attribute:

Attribute_Label: RouteIdentifier
Attribute_Definition:

A unique Route identifier to identify a route (City,County State, Tribal, Forest) in any given data set. For State Routes, Route IDs are assigned by WSDOT's GIS and Roadway Data Office

Attribute_Definition_Source: WSDOT Application - DOTS

Attribute:

Attribute_Label: StateRouteMilepost
Attribute_Definition:

A logical number, assigned by a Linear Referencing Method, to a given point along a State Route. This value will always match the Accumulated Route Mileage value unless there has been a realignment or a jurisdictional transfer which changes the length of a route.

Attribute_Definition_Source: WSDOT Application - DOTS

Attribute:

Attribute_Label: AheadBackIndicator
Attribute_Definition:

An indicator that denotes if the Milepost is within a back mileage equation area. A back mileage equation area occurs when a segment of a route is added at any point other than the end of an existing route, or when a realignment occurs.

Attribute_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: A
Enumerated_Domain_Value_Definition: Ahead

Enumerated_Domain:

Enumerated_Domain_Value: B
Enumerated_Domain_Value_Definition: Back

Attribute:

Attribute_Label: AccumulatedRouteMile
Attribute_Definition:

The measure of a point along the length of a route in which the distance is measured as an accrual of mileage from the beginning of the route

Attribute_Definition_Source: WSDOT Application - DOTS

Attribute:

Attribute_Label: SnapshotDate
Attribute_Definition:

The date of a point in time that data was fixed or a "snapshot" taken of the data.

Attribute_Definition_Source: WSDOT Application - DOTS

Attribute:

Attribute_Label: LRSDate
Attribute_Definition:

The Linear Referencing System date that this record is using for location.

Attribute_Definition_Source: WSDOT Application - DOTS

Attribute:

Attribute_Label: TrffcwayFeatOrientCd
Attribute_Definition:

A code that represents a position of a feature, event, or traffic impact relative to the Trafficway from the increasing direction of travel.

Attribute_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: L
Enumerated_Domain_Value_Definition: Left

Enumerated_Domain:

Enumerated_Domain_Value: LC
Enumerated_Domain_Value_Definition: Left center

Enumerated_Domain:

Enumerated_Domain_Value: RC
Enumerated_Domain_Value_Definition: Righr center

Enumerated_Domain:

Enumerated_Domain_Value: R
Enumerated_Domain_Value_Definition: Right

Enumerated_Domain:

Enumerated_Domain_Value: B
Enumerated_Domain_Value_Definition: Both

Attribute:

Attribute_Label: SHAPE
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: AccelerationLaneWidth
Attribute_Definition: Width, in feet, of the acceleration lane.
Attribute_Definition_Source: WSDOT
Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Overview_Description:

Entity_and_Attribute_Overview:

This tabular data can be used with the State Route Linear Referencing System geospatial data set to depict the locations of acceleration lanes along Washington's State Routes.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

Washington State Department of Transportation, Office of Information Technology

Contact_Person: Jordyn Mitchell

Contact_Position: GIS Database Administrator
Contact_Address:

Address_Type: mailing
Address: PO Box 47430
City: Olympia
State_or_Province: WA
Postal_Code: 98504-7430
Country: US

Contact_Voice_Telephone: 360-705-7645
Contact_Electronic_Mail_Address: mitchejo@wsdot.wa.gov

Distribution_Liability:

The Washington State Department of Transportation shall not be liable for any activity involving this data with regard to lost profits or savings or any other consequential damages; or the fitness for use of the data for a particular purpose; or the installation of the data, its use, or the results obtained.

Standard_Order_Process:

Fees: none
Ordering_Instructions:

Download individual data sets from https://gisdata-wsdot.opendata.arcgis.com

Metadata_Reference_Information:

Metadata_Date: 20261002
Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Washington State Department of Transportation (WSDOT)
Contact_Person: Transportation GIS Data Steward

Contact_Position: Transportation GIS Data Steward
Contact_Address:

Address_Type: mailing
Address: PO Box 47380
City: Olympia
State_or_Province: WA
Postal_Code: 98504-7380
Country: US

Contact_Electronic_Mail_Address: TransportationGISDataSteward@wsdot.wa.gov.
Contact_Instructions: Contact by e-mail is preferred.

Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time

Roadway Acceleration Lanes 2025, Washington State Department of Transportation

Metadata: