Live data from Hacker News

Stanford students are more likely to wear masks on bicycles than helmets

stanfordreview.org

41–50 of 152 posts

Re: Stanford students are more likely to wear masks on bicycles than helmets

#41
post #34
post #30

Earlier quoted context omitted.

If they’re biking around campus, they also don’t need masks.

But they probably need to wear it both where they are going and where they come from, so why not keep it on? Whereas they don't need a helmet for anything else in the day.

Any good mask will make it very hard to breathe under strenuous activity. N95 masks also get blocked after an amount of air passes through them so they become ineffective. Best not to wear them if you’re gonna be in the wind.

Re: Stanford students are more likely to wear masks on bicycles than helmets

#42
post #32

The same is true in the Netherlands. Honestly, if they are biking around campus, they don’t need helmets. Helmets are needed on American roads because of poor biking infrastructure (not an issue on campus or in the Netherlands). The article is taking liberties using nationwide statistics to criticize local behavior.

Are you sure? Just falling over on the bike while stationary (I admit I've managed this before) without being able to partially break your fall. could outright kill you if your head hits the pavement. (An uncontrolled fall from standing height to concrete such as by fainting can kill.) Even if you don't die, head impacts are really bad for the brain.

I don't think I can underline this point enough. Helmets are just as effective on the slow/no speed fall as they are on the high speed ones. In many ways, I wouldn't be surprised if they are more effective there.

Re: Stanford students are more likely to wear masks on bicycles than helmets

#43
post #34

Earlier quoted context omitted.

But they probably need to wear it both where they are going and where they come from, so why not keep it on? Whereas they don't need a helmet for anything else in the day.

Any good mask will make it very hard to breathe under strenuous activity. N95 masks also get blocked after an amount of air passes through them so they become ineffective. Best not to wear them if you’re gonna be in the wind.

But we're talking about biking across campus, not biking for sports. So not really "strenuous activity" where you'd notice that. (even just because you don't want to be sweaty at the other end either)

Re: Stanford students are more likely to wear masks on bicycles than helmets

#44
post #32

Earlier quoted context omitted.

Are you sure? Just falling over on the bike while stationary (I admit I've managed this before) without being able to partially break your fall. could outright kill you if your head hits the pavement. (An uncontrolled fall from standing height to concrete such as by fainting can kill.) Even if you don't die, head impacts are really bad for the brain.

You could also hit your head after tripping while walking, but people don’t wear helmets on walks. I think the point was that there is a comfortable level of risk people are willing to take. If you remove cars from the equation, then the perceived risk is much lower while biking.

Falling on a stationary bike is a lot easier than you'd imagine. And the extra foot off the ground that you will be, can easily add to the damage.

I remember when I first started using clipless peddles, you free the foot on the wrong side, and odds are high you are hitting the ground. Stupid easy to do.

Re: Stanford students are more likely to wear masks on bicycles than helmets

#45

Earlier quoted context omitted.

If it’s not N95 it won’t be blocking out P2.5 particulates emitted from exhausts.

The masks they recommend in China are the N95 ones with valves that are banned in the west. My guess why is because they have to contend with both a pandemic and high pollution levels.

not sure if they're banned or not, they're not recommended because the valve lets you exhale unfiltered air, which is rather pointless for covid protection. For particulate filtering they're perfect though.

Re: Stanford students are more likely to wear masks on bicycles than helmets

#46
post #32

The same is true in the Netherlands. Honestly, if they are biking around campus, they don’t need helmets. Helmets are needed on American roads because of poor biking infrastructure (not an issue on campus or in the Netherlands). The article is taking liberties using nationwide statistics to criticize local behavior.

Are you sure? Just falling over on the bike while stationary (I admit I've managed this before) without being able to partially break your fall. could outright kill you if your head hits the pavement. (An uncontrolled fall from standing height to concrete such as by fainting can kill.) Even if you don't die, head impacts are really bad for the brain.

The statistics don’t lie. Biking in the Netherlands is incredibly safe even without helmet wearing.

https://www.sciencedirect.com/science/article/abs/pii/S09257...

Turns out there are other ways to make cycling safe. One could argue that helmet wearing might make it even safer, but we are talking about optimizing a number that is already very low.

I’ve been to Stanford before and the campus is pretty car free. It is big and mostly flat, so most students have bikes to get from one building to another, but you aren’t speeding around or anything, it’s a very Dutch biking experience.

Re: Stanford students are more likely to wear masks on bicycles than helmets

#47
post #33

I'm pretty sure it's just that they need their mask wherever they're going and it's easier to hop on and hop off with it than stow it away.

This is the most likely reason. I've taken to just wearing a mask as soon as I walk out my door, since everywhere I'm going requires one anyway. It's more of a pain to keep taking it off and putting it back on than to just leave it on. I also wear a shirt the whole time I'm out even though it's technically not required while I'm in my car.

Re: Stanford students are more likely to wear masks on bicycles than helmets

#48

Earlier quoted context omitted.

Why would you ever assume that!? I also wear a mask when riding near traffic. Masks on bikers without helmets were a common sight in Paris in 2009 when I lived there. The mask has a measureable increase in immediate comfort, while the helmet is something that requires thinking ahead. Of course more people will remember a mask before they remember a helmet.

Is helmet wearing on bikes common in Europe anywhere outside of the UK?

Not for casual riding.

Re: Stanford students are more likely to wear masks on bicycles than helmets

#50
post #32

Earlier quoted context omitted.

Are you sure? Just falling over on the bike while stationary (I admit I've managed this before) without being able to partially break your fall. could outright kill you if your head hits the pavement. (An uncontrolled fall from standing height to concrete such as by fainting can kill.) Even if you don't die, head impacts are really bad for the brain.

The statistics don’t lie. Biking in the Netherlands is incredibly safe even without helmet wearing. https://www.sciencedirect.com/science/article/abs/pii/S09257... Turns out there are other ways to make cycling safe. One could argue that helmet wearing might make it even safer, but we are talking about optimizing a number that is already very low. I’ve been to Stanford before and the campus is pretty car free. It is…

But the Dutch have experience, from a very young age.
Post reply on HN