Search datasets
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A tremendous amount of work at the District Department of Transportation (DDOT) is done behind the scenes, long before crews break ground on construction projects. Our planning staff designs new...
Search relevance: 116.65 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 07:08 PM -
This dataset provides all the data used to generate the Tables and Figures in the journal article titled 'Analysis of PM2.5, black carbon, and trace metals measurements from the Kansas City...
Search relevance: 83.57 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 07:01 PM -
The goal of this U.S. Army Corps of Engineers (USACE) - funded study that began in 2004 is to determine if the smolt-to-adult return rates (SARs), transport/in-river ratio, and differential...
Search relevance: 56.85 | Views last month: 9 | Catalog Last Checked: August 03, 2026 at 04:06 AM -
A GeoJSON file with polygons of every location studied. ------------------------------------------ The City of Seattle Department of Transportation (SDOT) is providing data from the public life...
Search relevance: 39.41 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 06:05 PM -
Provides details on the sites selected for each study, including various attributes to allow for comparison across sites. ------------------------------------------ The City of Seattle...
Search relevance: 39.30 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 06:04 PM -
Provides data on people staying still in the space, including total number observed, demographic data, group size, postures, and activities. ------------------------------------------ The City...
Search relevance: 38.69 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 06:04 PM -
Provides data on people moving through space, including total number observed, gender breakdown, group size, and age groups. ------------------------------------------ The City of Seattle...
Search relevance: 38.64 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 06:04 PM -
Hydraulic assessment summary at selected real-time pier scour monitoring sites in Idaho, 2020–2022
To observe real-time pier scour at three scour-critical sites in Idaho, the U.S. Geological Survey, in cooperation with Idaho Transportation Department, installed and operated fixed real-time...
Search relevance: 38.63 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 10:47 PM -
This is a listing of vehicle and trailer inspection transactions with details useful to parties that study the transportation industry and fleet characteristics.
Search relevance: 38.61 | Views last month: 53 | Catalog Last Checked: November 04, 2026 at 07:15 PM -
This is a listing of vehicle and vessel registration transactions with details useful to parties that study the transportation industry and fleet characteristics.
Search relevance: 38.41 | Views last month: 77 | Catalog Last Checked: November 04, 2026 at 07:15 PM -
Provides details on the different studies that have been conducted, including project information. ------------------------------------------ The City of Seattle Department of Transportation...
Search relevance: 37.81 | Views last month: 5 | Catalog Last Checked: September 10, 2026 at 06:04 PM -
Data collected during the Kansas City Transportation and Local-Scale Air Quality Study (KC-TRAQS). This dataset is associated with the following publication: Kimbrough, S., S. Krabbe, R....
Search relevance: 37.80 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 06:55 PM -
The Large Truck* Crash Causation Study (LTCCS) is based on a three-year data collection project conducted by the Federal Motor Carrier Safety Administration (FMCSA) and the National Highway...
Search relevance: 34.26 | Views last month: 3 | Catalog Last Checked: October 15, 2026 at 08:50 PM -
The Large Truck* Crash Causation Study (LTCCS) is based on a three-year data collection project conducted by the Federal Motor Carrier Safety Administration (FMCSA) and the National Highway...
Search relevance: 34.25 | Views last month: 4 | Catalog Last Checked: October 15, 2026 at 08:47 PM -
Data were collected during the Multi-Modal Intelligent Transportation Signal Systems (MMITSS) study. MMITSS is a next-generation traffic signal system that seeks to provide a comprehensive traffic...
Search relevance: 34.17 | Views last month: 18 | Catalog Last Checked: November 03, 2026 at 10:58 PM -
The Large Truck* Crash Causation Study (LTCCS) is based on a three-year data collection project conducted by the Federal Motor Carrier Safety Administration (FMCSA) and the National Highway...
Search relevance: 34.05 | Views last month: 2 | Catalog Last Checked: October 15, 2026 at 08:50 PM -
The Large Truck* Crash Causation Study (LTCCS) is based on a three-year data collection project conducted by the Federal Motor Carrier Safety Administration (FMCSA) and the National Highway...
Search relevance: 33.98 | Views last month: 11 | Catalog Last Checked: October 15, 2026 at 08:47 PM -
The Large Truck* Crash Causation Study (LTCCS) is based on a three-year data collection project conducted by the Federal Motor Carrier Safety Administration (FMCSA) and the National Highway...
Search relevance: 33.98 | Views last month: 2 | Catalog Last Checked: October 15, 2026 at 08:50 PM -
This study focuses on the drinking and driving habits of Americans. The questionnaire contained 51 questions. Respondents were interviewed over the telephone and asked about their frequency...
Search relevance: 33.83 | Views last month: 3 | Catalog Last Checked: October 15, 2026 at 04:03 PM -
Data were collected during the Multi-Modal Intelligent Transportation Signal Systems (MMITSS) study. MMITSS is a next-generation traffic signal system that seeks to provide a comprehensive traffic...
Search relevance: 33.13 | Views last month: 3 | Catalog Last Checked: November 03, 2026 at 11:00 PM
