Articles in category: cycling

Wind, crosswinds and bicycle speed

31 March 2021 - On the internet, you’ll find many articles that discuss the theoretical effect of wind on cycling speed (plus articles on wind tunnel experiments, often paid for by companies that sell aerodynamic jerseys). But what about actual rides? And what’s the effect of crosswinds? I did an exploratory analysis of about 125 rides around the Ronde Hoep, a polder to the south of Amsterdam.

Trams, bicycles and city growth

1 March 2020 - Faster transportation made longer commutes possible, which meant cities could grow. But Amsterdam started to grow before tramways were electrified and bicycles became popular. What happened?

Amsterdam, evaluated by cyclists

18 January 2020 - With the Ping if you care programme, the city of Amsterdam has collected about thirty thousand reports from cyclists: for example about long waiting times at traffic lights or about fast cycling routes. I had the opportunity to do an exploratory analysis for cyclists’ organisation Fietsersbond.

Holleweg

8 September 2019 - If you’re cycling in the Netherlands, especially in hilly areas, you may well find yourself on a road named Holleweg (Holloway). I had the idea that if you’d create a map of all the roads named Holleweg, you might end up with a simplified elevation map of the Netherlands.

Traffic flow maps

19 May 2019 - A 1976 traffic study published by the city of Amsterdam contains beautiful traffic flow maps showing how cyclists and motorists use the city’s streets. A tweet alerted me to the fascinating history of traffic flow maps.