To provide I grouped the WalkMap scores for each home location into five quintiles with about 720 participants in each category. Finally, I summarized the number of trips by mode within each category as shown below - it is important to emphasize that this breakdown is not representative sample of the overall mode share for Metro Vancouver because these data are based on trips during the week-long BC Commuter Challenge.
Mode Share by Walkability Quintile
I was happy to confirm that people who live in more walkable areas did in fact walk more. However, I was somewhat surprised to see that cycling and transit mode share was nearly constant between scenarios. This brings up the issue of whether I should add a transit component score to improve the practicality of my WalkMap model. What do you think: should a measure of access to transit be included in my WalkMap model or should this be a separate TransitMap-type score?