i/o: the psrc data blog


You've found INPUT/OUTPUT, the technical data team blog from the Puget Sound Regional Council in Seattle, Washington. At I/O, we write about the data and tools which support our region's transportation planning, economic development, and growth management strategies.

PSRC also has a general-interest blog about regional issues.

4K Travel Model 4.0.3 - Smaller and Better

4K Travel Model 4.0.3 - Smaller and Better

The official travel model used at PSRC is known as 4K. Originally released in late 2013, 4K is an advanced “four-step” travel model and we use it to analyze the performance of myriad future scenarios of transportation infrastructure.

It’s... » Read More

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