Archive for rental bike

don’t wear your helmet, you could have a bike accident!

Posted in Kids, Running, Statistics, Travel with tags , , , , , , , , , , , on January 18, 2022 by xi'an

As once in a while reappears the argument that wearing a bike helmet increases one’s chances of a bike accident. In the current case, it is to argue against a French regulation proposal that helmets should be compulsory for all cyclists. Without getting now into the pros and cons of compulsory helmet laws (enforced in Argentina, Australia, and New Zealand, as well as some provinces of Canada), I see little worth in the study cited by Le Monde towards this argument. As the data is poor and poorly analysed. First, there is a significant fraction of cycling accidents when the presence of an helmet is unknown. Second, the fraction of cyclists wearing helmets is based on a yearly survey involving 500 persons in a few major French cities. The conclusion that there are three times more accidents among cyclists wearing helmets than among cyclists not wearing helmets is thus not particularly reliable. Rather than the highly debatable arguments that (a) seeing a cyclist with an helmet would reduce the caution of car or bus drivers, (b) wearing an helmet would reduce the risk aversion of a cyclist, (c) sport-cyclists are mostly wearing helmets but their bikes are not appropriate for cities (!), I would not eliminate [as the authors do] the basic argument that helmeted cyclists are on average traveling longer distances. With a probability of an accident that necessarily  increases with the distance traveled. While people renting on-the-go bikes are usually biking short distances and almost never wear helmets. (For the record, I mostly wear a [bright orange] helmet but sometimes do not when going to the nearby bakery or swimming pool… Each time I had a fall, crash or accident with a car, I was wearing an helmet and I once hit my head or rather the helmet on the ground, with no consequence I am aware of!)

Vélib’surdity!

Posted in pictures, Running, Travel with tags , , , , , , , on April 8, 2018 by xi'an

On January 1, 2018, the official purveyor of short term rental bikes in Paris, the Vélib‘, changed, due to Smovengo winning the official bid for the renovation of the 2007 structure, against the contender JCDecaux. I almost never use these bikes as I travel with mine(s), except when stuck in a broken train or sudden industrial action! But I find amazing that the bid comparison did not consider the ecological cost of switching operators, as every single slot of every Vélib’ station had to be changed to accommodate the new bicycles. Some of which are electric bikes, requiring electricity plugs on every slot, two other ecological fallacies. And this is not even accounting for the disposal of tens of thousands of the older bikes (which were already suffering from a very high failure rate). Given the slow pace of the switch, free floating bike services like Ofo, Gobee, and OBike tried to take a share of the market, but they suffered so many degradations that they are gone or about to go. Another mountain of used bikes to dispose off…

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