He found that the Ballard area of Seattle is especially bikeable.
"Parast decided to do a Seattle bicycle analysis after seeing the 2008 Cycle Zone Analysis of Portland. Using the same factors that we're observed in the Portland analysis, Parast anaylized Seattle and compared it to Portland, a city that has made progressive changes to support bicycle commuting.
'I took a look at factors that are important for a bikeable, high quality area,' Parast said.
These factors include street connectivity, land use, bicycle facilities, slope, and barriers such as a high density of cars."