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County
Non-Traffic Citations
Allegheny County / City of Pittsburgh / Western PA Regional Data Center —
Non-traffic citations (NTCs, also known as "summary offenses") document low-level criminal offenses where a law enforcement officer or other authorized official... -
Census Blocks in 2020
District of Columbia —
Census blocks are statistical areas bounded on all sides by visible features (e.g., streets, roads, streams, and railroad tracks), and by non-visible boundaries (e.g.,... -
City
PA State Roads
City of Philadelphia —
State-owned and maintained public roads within Pennsylvania as extracted from the PENNDOT Roadway Management System (RMS). Includes fields describing pavement type,... -
State
MD iMAP: Maryland Traffic Cameras - Traffic Cameras (CHART)
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This dataset provides the locations of Traffic Cameras in Maryland from the... -
2023 Traffic Volume
District of Columbia —
Traffic volume of Roadway Blocks. The dataset contains traffic volume data, created as part of the District of Columbia, Department of Transportation (DDOT) Roads and... -
Federal
U.S. International Air Travel Statistics (I-92 data) Program
Department of Commerce —
Information on international air traffic between the United States and other countries. Provides publications for a fee. -
Federal
Collection Long-Term Pavement Performance (LTPP)
Department of Transportation —
Long-term Pavement performance, construction, traffic, and environmental data for more than 2500 pavement sections in the United States and Canada. More than a dozen... -
Parking Violations Issued in January 2026
District of Columbia —
Parking citation locations in the District of Columbia. The Vision Zero data contained in this layer pertain to parking violations issued by the District of Columbia's... -
Federal
Intelligent Transportation Systems (ITS) Costs
Department of Transportation —
The Intelligent Transportation Systems Joint Program Office (ITS JPO) of the U.S. Department of Transportation (U.S. DOT) established the ITS Costs Database as a... -
Roads
District of Columbia —
Road edges are defined as the edge of the improved surface including the improved shoulder but do not include the unimproved shoulder, only the travel part of the... -
Stop Data
District of Columbia —
In July 2019, the Metropolitan Police Department (MPD) implemented new data collection methods that enabled officers to collect more comprehensive information about... -
City
SDOT GIS Datasets
City of Seattle —
The City of Seattle Transportation GIS Datasets | https://data-seattlecitygis.opendata.arcgis.com/datasets?t=transportation | Lifecycle status: Production | Purpose:... -
Federal
Collection Vehicle Safety Research and Development Database
Department of Transportation —
R&D Database provides Vehicle Crash Test data, Biomechanics Test Data, and Component Test Data to support NHTSA's motor vehicle and traffic safety goals. -
State
Washington State Air Quality
State of Washington —
The links on this page provide access to the Washington State Department of Ecology's Air Monitoring Network, which tracks various air pollutants at more than six... -
Automated Safety Camera (ASC) Locations and Violations Tracker
District of Columbia —
DC's Automated Safety Camera (ASC) program is designed to create safer roadways for all road users in the District of Columbia. As part of our Vision Zero goal, DDOT’s... -
Federal
Collection NHTSA Product Information Catalog and Vehicle Listing (vPIC)
Department of Transportation —
The NHTSA Product Information Catalog and Vehicle Listing (vPIC) is a consolidated platform that presents data collected within the manufacturer reported data from... -
State
Vehicle Crash Data Repository
State of Connecticut —
The Connecticut Crash Data Repository (CTCDR) is a web tool designed to provide access to select crash information collected by state and local police. This data... -
Federal
Collection Travel Monitoring Analysis System (TMAS)
Department of Transportation —
Internal FHWA data program that assists in the collection and analysis of data on traffic volumes, vehicle classification, truck weights for traffic statistics,... -
City
1.08 Crash Data Report (detail)
City of Tempe —
Please note that 2025 data are incomplete and will be updated as additional records become available. Data are complete through 12/31/2024. Fatal and serious injury... -
Federal
Collection Analytics.USA.gov
General Services Administration —
High level website analytics from across the government domain.