Trip tables are two-dimensional matrices containing the estimated number of trips between any two origin/destination points in the Puget Sound region. The tables for our region are aggregated into 3,700 neighborhoods (or “zones”) for convenience, so the matrices are 3700x3700 in size. You can think of a trip table as a big “from/to” table, on a neighborhood-to-neighborhood scale.
Includes signs installed and maintained by the Seattle Department of Transportation within the public right of way. The inventory is maintained in SDOT’s Infor/Hansen Asset Management System, and displayed in GIS as point events along a block face. To download the shapefile set or the kmz (compressed kml) right click on the file in the Attachment section and select Save As and select where you want it saved.
Transportation features including rail, trails and pedestrian walkways with address ranges & names derived from digital orthophotography and GPS.
Purpose: Developed to support transportation planning & engineering; transit routing & transit operations within the Department of Transportation. The data supports the ATIS application used by the Regional Automated Trip Planning group. This group assists Metro bus riders to find the best itinerary possible. Trans_Network is a derived data layer from the TNET (Transportation Network) Geodatabase. TNET is the authoritative transportation network layer for King County. On-going maintenance to TNET is provided by multiple agencies and jurisdictions in King County.
A concurrency travel shed is a geographic area within unincorporated King County where all development within the travel shed would be likely to use or be affected by traffic on arterials within the travel shed.
Purpose: The travel shed data depicts the geographic layer of unincorporated King County by which to measure existing traffic conditions against the concurrency level-of-service standard.
Vehicle traffic volumes for arterial streets in Seattle based on spot studies that have been adjusted for seasonal variation. To provide a high level view of traffic volumes on major streets in Seattle, and compare changes from year to year. The AAWDT count is a seasonally adjusted average weekday daily total of vehicle traffic for all lanes, i.e. total vehicles in both directions for one average 24-hour business day, Monday through Friday. Only selected arterial streets are included.