20250303
09313600
1.0
FALSE
RouteDirectnessIndex_Points
680775.655484
2513295.777181
92139.081590
1346086.179333
1
002
Projected
GCS_North_American_1983_HARN
Linear Unit: Foot_US (0.304801)
NAD_1983_HARN_StatePlane_Washington_South_FIPS_4602_Feet
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20250305
09595200
20250305
09595200
150000000
5000
FGDC
FGDC CSDGM Metadata
dataset
20250305
Jordyn Mitchell
Washington State Department of Transportation, Office of Information Technology
GIS Database Administrator
US
jordyn.mitchell@wsdot.wa.gov
Jordyn Mitchell
Download individual data sets from https://gisdata-wsdot.opendata.arcgis.com
Feature Class
<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 11 0;"><SPAN><SPAN>For Planning use only. The Washington State Department of Transportation (WSDOT) shall not be liable for any activity involving the use of the data, including, but not limited to, lost profits or savings or any other economic or consequential damages. Nor does the WSDOT warrant the fitness of the data for use for a particular purpose, or the installation of the data, its use, or the results obtained.</SPAN></SPAN></P><P STYLE="margin:0 0 11 0;"><SPAN>To the fullest extent permitted by law, the Data User shall hold harmless, defend at its own expense, and indemnify WSDOT, its officers, employees, agents, and volunteers, against any and all liability, claims, losses, damages, or expenses, including reasonable attorney’s fees, arising from all acts or omissions of the Data User or its officers, agents, or employees in its use of the WSDOT data.</SPAN></P></DIV></DIV></DIV>
Washington State
vector digital data
Route Directness Index - Points
2025-01-30T00:00:00
Brian Wood
WSDOT Active Transportation
brian.wood@wsdot.wa.gov
WSDOT
WA
DOT
Washington
State
Department
Transportation
Pedestrian
Washington State Department of Transportation
Esri ArcGIS 12.8.3.29751
WA
Washington
ISO 19115 Topic Category
Transportation
Washington State OCIO Data Classification
Public information is information that can be or currently is released to the public. It does not need protection from unauthorized disclosure but does need integrity and availability protection controls.
1
-124.492558
-116.867877
49.023300
45.523511
This data provides a high-level measure of the Route Directness Index (RDI) associated with potential roadway crossing activities in population centers. The data has been developed for generalized locations along Washington State highways. This RDI data provides planners and designers with a general, but objective measure of out of direction travel requirements for a reference trip. The data is best suited for analysis of pedestrian and bicyclist trip making at regional or statewide scales. This layer uses available network input data and does not capture all potential crossing locations or evaluate the suitability of a given crossing for active travel.
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN STYLE="font-size:12pt">This feature class represents the points that were used for the Route Directness Index calculation. These points were generated along the increasing state routes as represented by the 12/31/2023 WSDOT LRS. Points were only generated within Population Centers (using the Population Centers dataset obtained from the GIS Workbench in January 2025). Every 0.01 mile (52.8 feet) along the route a transect was created perpendicular to the route extending 500 feet on each side of the route. These points represent the midpoint of each transect. </SPAN></P><P><SPAN STYLE="font-size:12pt">The Route Directness Index (RDI) is a ratio that compares the straight-line (crow-flies) distance from one point to another across a barrier to the actual distance imposed by the network of paths available to a traveler. RDI data is particularly relevant to pedestrian and/or bicyclist trips due to the extra time, physical energy, and exposure to weather that out of direction travel creates. A complete discussion of route directness, including potential applications to decision making, can be found Washington State Multimodal Permeability Pilot, August 2021 [</SPAN><A href="https://wsdot.wa.gov/sites/default/files/2021-11/MultimodalPermeabilityPilotReport-Aug2021.pdf" STYLE="text-decoration:underline;"><SPAN>https://wsdot.wa.gov/sites/default/files/2021-11/MultimodalPermeabilityPilotReport-Aug2021.pdf</SPAN></A><SPAN STYLE="font-size:12pt">].</SPAN></P><P><SPAN STYLE="font-size:12pt">RDI can be analyzed at different scales. A high-level analysis of RDI can address questions that compare population centers across the state or consider whether the RDI values are generally similar within a given population center or tend to vary in different portions of a population center. High level data could be combined with other statewide data such as crash data, transit stops, level of traffic stress data, destination data, etc. to analyze potential correlations. High level RDI data is less useful for analyzing a particular crossing location or recommending solutions to address high RDI values. A more detailed analysis is likely required when questions involve corridor studies or project evaluations. Detailed location information can refer to key destinations and crossing locations that are not captured using higher level network maps.</SPAN></P><P><SPAN STYLE="font-size:12pt">The lowest RDI is 1 because a trip between those points can be made directly along an existing roadway. The actual methodology analyzed hypothetical trips where the start and end points were about a quarter mile apart relative to a straight line. In such a situation, an RDI of 2 would mean the trip is twice the distance it might otherwise be, or about one-half mile. Although one-half mile is not particularly far, the RDI is independent of the actual distance. We might start further down the road and if the RDI remained a 2 our trip distance would be twice as long as it could have been. The RDI thus measures the real or perceived burden or travel cost incurred by a person walking or bicycling. </SPAN></P></DIV></DIV></DIV>
Brian Wood
WSDOT Active Transportation
brian.wood@wsdot.wa.gov
Brian Wood
<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 11 0;"><SPAN><SPAN>For Planning use only. The Washington State Department of Transportation (WSDOT) shall not be liable for any activity involving the use of the data, including, but not limited to, lost profits or savings or any other economic or consequential damages. Nor does the WSDOT warrant the fitness of the data for use for a particular purpose, or the installation of the data, its use, or the results obtained.</SPAN></SPAN></P><P STYLE="margin:0 0 11 0;"><SPAN>To the fullest extent permitted by law, the Data User shall hold harmless, defend at its own expense, and indemnify WSDOT, its officers, employees, agents, and volunteers, against any and all liability, claims, losses, damages, or expenses, including reasonable attorney’s fees, arising from all acts or omissions of the Data User or its officers, agents, or employees in its use of the WSDOT data.</SPAN></P></DIV></DIV></DIV>
188760
EPSG
6.3(9.0.0)
RouteDirectnessIndex_Points
Feature Class
188760
OBJECTID
OBJECTID
OID
4
10
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
SHAPE
Shape
Geometry
4
0
0
Feature geometry.
Esri
Coordinates defining the features.
RDI_Identifier
RDI_Identifier
Integer
4
10
0
Unique identifier field that is shared between the RDI points, lines, and transects.
Crow_Miles
Crow_Miles
Double
8
38
8
For the route passing through this point, Crow_Miles represents the straight-line distance from one end of the route to the other, in miles.
Route_Miles
Route_Miles
Double
8
38
8
For the route passing through this point, Route_Miles represents the actual length of the route, in miles.
RDI
RDI
Double
8
38
8
RDI, or Route Directness Index, is a ratio calculated by dividing the route miles by the crow miles. An RDI of 1 indicates that there is a completely direct route, while an RDI of 2 would indicate that a pedestrian would have to travel twice as far to reach the other end of the route.
RouteIdentifier
RouteIdentifier
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
Text
255
0
0
AccumulatedRouteMile
AccumulatedRouteMile
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
Double
8
38
8
StateRouteMilepost
StateRouteMilepost
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.
Double
8
38
8
AheadBackIndicator
AheadBackIndicator
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.
Text
1
0
0
LRSDate
LRSDate
The Linear Referencing System date that this record is using for location.
Date
8
0
0
Simple
FALSE
188760
TRUE
FALSE
Metadata most recently updated by Mary DuBose on 2/11/2025.
external
1ee3f4690fb3e55263b2b56dfe5aa332ef4cf441
Mary DuBose
HQ Design - Safety, Assets, and Innovation Unit (SAIU)
Asset Data Manager
mary.dubose@wsdot.wa.gov
True
Mary DuBose
The Route Directness Index was updated in January 2025 by Mary DuBose (HQ Design - Safety, Assets, and Innovation Unit). The previous version was created in June 2022 by Dan Keller. This dataset is developed in partnership with the Active Transportation Division.
Population Centers - Active Transportation
Accessed from WSDOT GIS Workbench
LRS 24k Increasing - 2023
Accessed from WSDOT GIS Workbench