A couple weeks ago I came across a tweet about someone presenting at a conference in the US about their study of Sherbourne Street, Toronto, and how big an impact the new physically separated bike lane had on fresh, nervous cyclists. Surprised, I thought: "Hey, why am I hearing about this from Americans?" I managed to contact on Twitter the presenter's former professor—Dr. Raktim Mitra at Ryerson U—sent me a copy of the poster. The presenter was Raymond Ziemba who presented at the 95th Annual Meeting of the Transportation Research Board, Washington, DC, earlier in January. (Photo credit: Martin Reis)
Ziemba found that "[t]here was a strong association between travel route change and mode substitution, where the likelihood of switching to cycling was 11 times higher for those who did not use the street before 2012." That is, the transformation of Sherbourne Street cycling facilities from painted bike lanes to physically separated bike lanes with curbs on the north end and raised to near sidewalk level on the south end. This is not surprising given the almost 300% increase in cyclists on Sherbourne.
There were some interesting findings of the survey that point to how important physical separation is to growing the mode share of cycling. Ziemba surveyed 214 cyclists on Sherbourne St in 2014. As Dr. Mitra summarized in his email to me:
- 38% current cyclists on Sherbourne did not cycle before 2012 for the same or similar trip.
- Most (55%) new cyclists would use transit before, while fewer (24%) potentially switched from driving. Might be good in a downtown context where transit congestion is a big issue.
- Most mentioned safety as the reason why they shifted.
- Savings in travel time scored almost as high as improved safety as a reason for cycling. That is, under favourable conditions, cycling can actually save time for many.
Even though there were fewer cyclists who switched from driving than switched from transit, it's still a substantial percentage and has a greater impact on congestion given the large space a car takes up to carry 1-2 people around.
I really appreciate that people are studying this since it'll really help with further campaigns. If a future masters student is looking for a topic, I would suggest replicating this for Richmond and Adelaide where my friends and I have suspected that not only have a large number of people switched from Queen or King but that it has opened up the core to many new cyclists as well.