How much delay for cyclists is caused by traffic lights

8 January 2017 • dirkmjk

The other day I posted an article on how much time cyclists lose at traffic lights in Amsterdam. Someone asked if I can calculate what percentage of total time lost by cyclists is caused by traffic lights. Keep in mind that delays can be caused by traffic lights, but also by crossings without traffic lights, crowded routes and road surface. »»

Exploring traffic lights with location data from cyclists’ phones

22 December 2016 • dirkmjk

In 2006, Amsterdammers voted Frederiksplein the location with the most irritating traffic light. Now, ten years later, data from the Fietstelweek (Bicycle Counting Week) offer a unique opportunity to map how much time cyclists lose at traffic lights. During Fietstelweek, over 40,000 Dutch cyclists have shared their location data using a smartphone app. Some of the findings are summarised on the map above, which shows quite a few red dots - locations where cyclists lose on average 30 seconds or more. »»

Inequality in elections

19 November 2016 • dirkmjk

There’s been a bit of fuss about turnout in the American presidential election, but turnout inequality is an issue in the Netherlands too. Youth, low-educated people and people with lower incomes are less likely to vote, possibly because they have little faith politicians will take their interests at heart. »»

Illustrating Amsterdam on Wikipedia

1 November 2016 • dirkmjk

Wikipedia has pages on Amsterdam in 197 languages, 149 of which have at least one image. The editors of different language versions do not generally use the same images to illustrate their page. The graph below shows how often images are used.[1] »»

Amsterdam houses on the Chinese market

2 October 2016 • dirkmjk

In the Guardian, London mayor Sadiq Khan has announced the launch of an investigation into the effect of foreign investment on the London housing market. In Amsterdam, concerns have been voiced over super rich Russians and Chinese buying up property, although this phenomenon is probably in its infancy compared to London. Newspaper het Parool reported that 15 expensive houses have been sold to rich Chinese and Russians in 2014 and identified a canal house, asking price 6.7 million euros, that had been sold to an ‘international investor’.[1] »»

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