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by close04 641 days ago
> When it comes to collision you should remember the formula "half m v squared"

Of course a car is faster, heavier, and more dangerous but spherical cow and all that. I've never seen a "frontal" collision between a pedestrian and a cyclist. And 99% of incidents I've witnessed between cars and cyclists were side swipes (the car slides into the cyclist's path and the contact is on the side) or the car flat on cutting off the cyclist who subsequently hit the side of the car like a wall. Neither are influenced much by speed.

> how different is a cyclist riding on a narrow road without a sidewalk differ from pedestrian walking the same road?

About 25km/h of difference. Meaning anything the cyclist does happens 7 times faster than with the pedestrian. Hit a pothole? You fly over the handle bars for some meters at 25-30km/h instead of 1.5m under pure gravity.

> They serve to protect the helmets from impacts incurred on their own account

Helmets are there to protect your head from an impact. They don't bother to assess blame.

You're really taking this as "but that's worse so nothing else matters". And this makes you forget one obvious thing: everyone is a pedestrian, not everyone is a cyclist or a driver. Whether you're 8 or 80 years old you're a pedestrian so there's no excuse to endanger them because "it could be worse". And another big difference is street traffic is regulated, sidewalk traffic is not. A cyclist among pedestrians is a more immediate and unpredictable danger to pedestrians (sure, not deadly, a broken wrist is just really unpleasant).

The bottom line is that from my personal experience looking around as mainly a pedestrian and a cyclist, this conversation withstanding, cyclists are the group of people who always expect the favorable treatment even though the cyclist who respects the law is more of a mythical creature. On the street the cars are bigger and faster so should pay more attention. On the sidewalk the same logic no longer applies, the bike is "not that fast or heavy", the injuries aren't "that serious" so the pedestrians should pay attention instead.