Podcast: The Arsonist and the Water Pistol

Oh dear: Theresa May and her P45. Image: Getty.

You know, it’s easy to forget, after the coughing and the comedian with the P45 and the bit where the sign started disintegrating, that there was a far bigger problem with Theresa May’s speech: it was bad.

To be specific, the housing policies the prime minister unveiled yesterday were in no way an adequate response to the housing crisis – which, you’ll recall, is disadvantaging the young, holding back our productivity, and (though I don’t care so much about this part) wrecking the Conservative party’s electoral chances. It is in some ways May’s good luck that nobody will have been paying the slightest attention to the actual content of her speech, or they might have noticed quite how completely bloody useless it was.

Anyway: this seemed like a good moment to drag Stephen Bush back into the podcasting basement to discuss all this. We cover the Conservative party’s long-standing failure to tackle this issue; our suggested solutions; and how exactly we can get rid of buy-to-let. All that, and you can learn about “the incident”, too.

The episode itself is below. You can subscribe to the podcast on AcastiTunes, or RSS. Enjoy.

Jonn Elledge is the editor of CityMetric. He is on Twitter as @jonnelledge and also has a Facebook page now for some reason. 

Want more of this stuff? Follow CityMetric on Twitter or Facebook.


 

 
 
 
 

The best bike maps are made by volunteers

A cyclist in Vancouver, Canada. Image: Getty.

Not all bike routes are equal. Some places that are marked as bike routes on a map feel precarious when traversed on two wheels, including shoulders covered in debris and places where you can feel the wind from speeding cars.

North American cities are building more bicycling routes, by adding on-street painted lanes, physically separated cycle tracks, bicycle-only or multi-use paths and local street bikeways. These different kinds of routes appeal to different types of users, from the interested but concerned cyclist to the keen road rider.

Despite this boost in biking infrastructure, a city’s website may not immediately reflect the changes or it may lack important information that can make cycling safer or more enjoyable.

Web-based maps that allow people to add information about bike routes give riders detailed data about the type of route, what it might feel like to ride there (do you have to ride close to cars?) and where it can take them (for example, shopping, work or school).

They can also tell us which cities are the most bike-friendly.

Measuring bike routes

We set out to assemble a dataset of bike routes in Canadian cities using their open data websites. But we found it was nearly impossible to keep it up-to-date because cities are constantly changing and the data are shared using different standards.

A physically separated cycle track in Victoria, British Columbia. Image: E. Gatti (TeamInteract.ca).

The solution was OpenStreetMap, which creates and distributes free geographic data. Anyone can add data or make edits to OpenStreetMap, whether they want to build a better bike map or make a navigation app.

We looked at OpenStreetMap data for three large cities (Vancouver, Toronto and Montréal) and three mid-sized cities (Victoria, Kelowna and Halifax) in Canada.

Not only did the data in OpenStreetMap agree reasonably well with the cities’ open data: in many cases it was more up-to-date. OpenStreetMap tended to include more local details such as where painted bike lanes ended and often marked the short cuts connecting suburban streets.

How did OpenStreetMap measure up?

Our analysis focused on how well different types of routes were mapped. We measured cycle tracks (which physically separate bikes from motorised traffic), on-street painted bike lanes (which use painted lines to separate bikes from motorised traffic), bike paths (which are located away from streets) and local street bikeways (which include traffic-calming features and where bicycling is encouraged).

Painted bike lanes are the most common type of route and also the most consistently well mapped. This makes sense, because the definition of a painted bike lane may be clearest across time and place. There is also a straightforward way for volunteers to tag it on OpenStreetMap.

But it was harder for us to distinguish cycle tracks from on-street painted lanes or paths (bicycle-only or multi-use) using OpenStreetMap. Local street bikeways were challenging to identify because of the wide range of ways cities design these kinds of routes along residential roads. Some use traffic-calming measures such as curb extensions, traffic islands, speed humps and raised traffic crossings to slow vehicle traffic and encourage safety, or greenery, reduced speed limits and bike-friendly markings on signs and the road surface.

Correspondence between OpenStreetMap and Open Data for categories of bicycling infrastructure. Image: author provided.

Bicycle routes that are physically separated from motor vehicles and pedestrians, like cycle tracks and bicycle-only paths, have the greatest benefits for bicycling safety and encourage bike use.

Ease of access to bicycle routes is important to a city’s overall bicycle friendliness, but there are other important things to consider including the distance to destinations, the number, slope and length of hills, number of riders and how the transportation culture of a city can influence its safety.


Bike-friendly Canadian cities

Our results showed that Montréal has the greatest total distance in cycle tracks in Canada. As cities continue building more bicycle routes, researchers and planners can use OpenStreetMap to measure these changes on the ground.

The perfect bicycle map is up-to-date, covers the entire globe and gives riders an idea of the kinds of experiences to expect on different trails, roads and paths. People cycling in cities can contribute to the high-quality geographic data needed to understand changes in bicycle friendliness.

But OpenStreetMap is only as good as its contributions. The exciting thing is that anyone who wants a better bike map — city planners, researchers and everyday riders — can join the bike-mapping revolution by logging in to OpenStreetMap and mapping the features that are important to bicyclists.

The Conversation

Colin Ferster, Post-doctoral fellow, University of Victoria and Meghan Winters, Associate Professor, Faculty of Health Sciences, Simon Fraser University

This article is republished from The Conversation under a Creative Commons license. Read the original article.