David T. Isaac Profile picture
Husband | Father | Lawyer | Cyclist | JD UWO '18, MA Phil Waterloo '15, BA Phil UWO '14 | Opinions my own | He/him
Jun 6, 2021 15 tweets 4 min read
This #CyclingScienceSunday we're going to do something a bit different. I was on Wortley Road (a typical small shopping/dining street) for #PedalPoll, and I informally collected some data on parking and active transportation. The results are SHOCKING (they're actually not). But first, the cycling numbers. There were 78 cyclists, with a pretty good gender split (42% women, 58% men). 17% were seniors, which is interesting because I've been told that we can't get rid of parking because too many seniors come to Wortley (more on that in a minute).
May 2, 2021 9 tweets 3 min read
This #CyclingScienceSunday, let's look at the attitudes of people who go car-free in a big city. 🧵

TL;DR: There are three main reasons - going green, health/wellbeing, and minimalism/convenience.

sciencedirect.com/science/articl…

#LdnOnt #BikeTO #CycleWR The authors interviewed 24 people living in Brisbane, Australia, which is a large, low-density city with relatively little cycling infrastructure. Most participants drove before going car free, and all were legally able to drive.
Mar 14, 2021 6 tweets 3 min read
This #CyclingScienceSunday let's look at whether drivers look for cyclists while making turns.

TL;DR: Approximately half of drivers don't look for cyclists, even while turning across a bike lane.

hfast.mie.utoronto.ca/wp-content/upl…

#LdnOnt #CycleWR #BikeTO The authors used an eye-tracking headset with 19 participants who drove a set route in a retail/residential area of Toronto. The route included two turns off a major road with a bike lane (Bloor St.) onto other roads. Image
Feb 21, 2021 11 tweets 3 min read
This #CyclingScienceSunday let's look at some things that prevent marginalized communities from biking, even where there is good infrastructure. 🧵

TL;DR: Racism, financial barriers, knowledge barriers, and spatial inequality.

sciencedirect.com/science/articl…

#LdnOnt #BikeTO #CycleWR This study comes from Grenoble, France, which is a cycling-friendly city. The authors did 19 interviews with policymakers, residents with different identities, and bike service providers to identify barriers to cycling for people from marginalized communities.
Jan 31, 2021 5 tweets 3 min read
Today for #CyclingScienceSunday we're taking a look at the effect low-traffic neighbourhoods ("LTNs") have on car ownership.

TL;DR: Over 2 years, LTNs decrease car ownership by 6%, and cycle tracks decrease car ownership by 2%.

westminsterresearch.westminster.ac.uk/download/7c7ef…

#LdnOnt #BikeTO #CycleWR The authors (@RachelAldred, @Urban_Turbo and Anna Goodman who I can't find on twitter), looked at car registration data from 2015-2019 to determine whether LTNs and other cycling infrastructure built in London, England impacted car ownership compared to other areas in the city.
Dec 6, 2020 9 tweets 3 min read
In light of all the bad news for pedestrians and cyclists this week, this #CyclingScienceSunday let's look at how news coverage of crashes affects perceptions of pedestrians.

TL;DR: people are hit by drivers, not cars. @ your favourite journalist.

sciencedirect.com/science/articl… The authors wrote three versions of a news article about a collision: a pedestrian-focused, a driver-focused and a thematically-framed (i.e., putting the crash in the context of other similar crashes) version.
Nov 22, 2020 6 tweets 2 min read
This #CyclingScienceSunday let's take a look at what factors prompt people to bike in the winter.

TL;DR: It mostly comes down to plowing bike lanes. If bike lanes are plowed, 40% of people say they would bike in the winter.

sciencedirect.com/science/articl… This study is from Sweden, which has a pretty robust cycling culture (although the study is 20 years old and it was a bit different then). The authors differentiated between people who frequently bike in the winter, don't bike in the winter, infrequently bike or never bike.
Oct 9, 2020 7 tweets 2 min read
Got bored and re-wrote The Charge of the Light Brigade to be about a group of unlucky commuter cyclists. Sincere apologies to Tennyson and my various English professors for the ungodly things I did to the metre to get it to fit into 280 characters... I
Half a league, half a league,
Half a league onward,
All in the bike lane of Death
Rode the six cyclists.
“Forward, the commuters!
Ride in the lane!” he said.
Into the bike lane of Death
Rode the six cyclists.
Dec 3, 2019 15 tweets 5 min read
With a certain Ratepayers Association back in the news, I thought I'd take a look at the "facts" page on the group's website. #ldnont Fact 1: Calgary's Supervised Consumption Site ("SCS") led to an increase in crime.

The source for this is, oddly, a letter to the editor to a Barrie newspaper, although there were reports of increased crime near the cite (but see facts 3 and 4 below).
Nov 18, 2018 22 tweets 7 min read
In light of the #ONPC resolution stating that gender theory is "unscientific," here are a list of resources by medical professionals stating that sex and gender are distinct, and that gender has social aspects. #onpoli #TransRightsAreHumanRights #TransAwarenessWeek I will also include excerpts from papers showing the link between accepting people's gender and reducing suicide among trans folks. @TGranicAllen's policy will materially contribute to the deaths of transgender people. Please feel free to share this with your MPP.