Metadata: Speed Limits

Speed Limits

Category Transportation - Streets
Feature Dataset Name STAND-ALONE
Item Name speedlimit_pdx
Database Type
Originator City of Portland
Bureau Bureau of Transportation
Publication Date
Abstract Thisfeature class represents the speed limit for all public surface streets inPortland. Freeways and associated ramps are not included. Speed limits for eachsegment are described in miles per hour. In addition, segments are populatedwith a Yes/No value indicating the presence/absence of a school zone.

Consistent with City Ordinance 188774, local, residential streets arerepresented with a 20 mph speed limit in the dataset whether or not speed limitsignage has been posted. Residential streets that are not posted 20 mph revertto basicrule.
Purpose To identify designated speed limits on Portland streets.
Supplemental Information
Last Dataset Update 06/12/2026 16:50
Last Source Update 06/12/2026 05:30
Maintenance/Update Frequency As needed
Extent City of Portland
Data Type
Shape Type Poly Line
Feature Count 33135
Horizontal Position Accuracy
Horizontal Position Accuracy Link
Progress
North Bounding Coordinate 727313.28510499
South Bounding Coordinate 651320.292322829
East Bounding Coordinate 7696818.58694226
West Bounding Coordinate 7604233.44947506
Theme Keyword(s) PBOT,speed limit
Theme Keyword Thesaurus
Place Keyword(s)
Place Keyword Thesaurus
Access Constraints Available for Public Use
Use Constraints These data are distributed under the terms of the City of Portland Data Distribution Policy. Care was taken in the creation of this data but it is provided "as is".

The City of Portland cannot accept any responsibility for errors, omissions, or positional accuracy.
Source Dataset Type Enterprise Geodatabase
Output Geodatabase ASSETS_PDOT
Distribution Grid: State plane coordinate system 1983(91).
Units: International feet
Datum: North American Datum of 1983/1991 (HPGN)
Liability: The information in this file was derived from digital databases on the City of Portland GIS. Care was taken in the creation of this file. The City cannot accept any responsibility for errors, omissions, or positional accuracy. There are no warranties, expressed or implied.
Format: Shapefile or File Geodatabase Feature Class - Data will be provided via City of Portland FTP Site.
Online Resource: http://portlandmaps.com/opendata
Online Instructions: City of Portland Public/Open Data is distributed via the PortlandMaps Open Data Site - http://portlandmaps.com/opendata. Data not available on the PortlandMaps Open Data site can be requested by contacting the City of Portland CGIS Group - maps@portlandoregon.gov
Transfer Size: varies
SPCS Zone Identifier: 5076
Contact(s)
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PBOT GIS Support
503-823-5185
PBOTGISSupport@portlandoregon.gov
1120 SW Fifth Ave., Suite 1331
Portland, OR 97204

City of Portland - PBOT
503-823-5185
PBOTFrontDesk@portlandoregon.gov
File(s)
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Lineage
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Web Services

Service Description Feature Access Layer
PBOT_DefaultLayers This service includes an array of asset, permitting, planning and project data to serve as a general reference for PBOT staff working remotely. Dynamic School Zone
PBOT_DefaultLayers This service includes an array of asset, permitting, planning and project data to serve as a general reference for PBOT staff working remotely. Dynamic Speed Limit
Transportation Transportation Layers Dynamic School Zone
Transportation Transportation Layers Dynamic Speed Limit
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Attribute Tables & Domains

X
speedlimit_pdx
Table Description
Table Jurisdiction
Column Sort Column Name Column Alias Column Type Column Size Domain Value(s) Column Description
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1 TranPlanID TranPlanID String 15
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X
Unique identifier.
1 LocationID LocationID String 15
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X
Location in PBOT's location hierarchy system
1 RoadName RoadName String 100
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X
Streetname.
1 SpeedLimit SpeedLimit String 2
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10 10 MPH X
15 15 MPH X
20 20 MPH X
25 25 MPH X
30 30 MPH X
35 35 MPH X
40 40 MPH X
45 45 MPH X
50 50 MPH
X
55 55 MPH X
X
Speed limit in miles per hour (MPH).
1 SchoolZone SchoolZone String 1
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N No X
Y Yes X
X
Presence of school zone.
1 ProjectNumber ProjectNumber String 50
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X