King County, Washington

This is the prototype page for access to arterial and freeway speed estimates created using transit vehicles as probes.

Try the ProbeView Java application that shows real-time speed as tranist vehicles pass over the virtual sensor locations. This requires Java Web Start, distributed in Windows XP by default, to create a display map on your screen. The red dots are the virtual sensors, and the yellow and white circles connected to them show the speeds at the virtual sensors. The yellow circles represent virtual sensors on freeways and arterials, whereas the white circles represent those on reversible freeway lanes. Holding your mouse over any of the red sensor spots will show you the virtual sensor number and location. Touching a roadway will show its name. In addition, StoreView is a Java application that displays a set of virtual speed sensors that update every 20 seconds, and color-codes the sensors to indicate the level of congestion. This set of virtual detectors is being tested to be included in the Traffic Management System operated by WSDOT in Seattle An alternative pictographic traffic map that is created using virtual sensors that use transit vehicles as traffic probes is also available. OR Speed estimates for buses traveling on freeways and arterials are displayed on maps at the bottom of this page. Clicking on any of the shaded areas will bring up a larger image of that area. From there, moving the mouse over either any of the red sensor spots or yellow bus circles will show you the exact location of that particular sensor. The number in the yellow circle represents the estimated speed of a bus. Some of the red spots and yellow circles are clickable and will show a static example of the type of plots that will eventually be available for each sensor location. AND New features have been added to the probes project. Estimated Travel Times for major corridors are now available.