I tried really hard to make it clear that I am looking out for them. Apparently that was insufficient. It is made unnecessarily difficult to look out for someone who is weaving around erratically and completely oblivious to everything around them.

I bike on the road. I expect cars to look out for me. Nonetheless, I take measures to make it easy for them to do that. I wear reflective gear and have lights at night. I bike in an easily visible space. I signal where I'm going and move in a consistent, predictable manner.

There's absolutely no reason that someone on a sidewalk shouldn't expect that another person, whether walking or on a bike, might also need to use the sidewalk and to leave space for them to do so, or at a bare minimum, maintain a modicum of awareness so that you can see or hear someone else approaching.

The bigger, more dangerous to others vehicle must look out for smaller ones.

You expect cars to look out for bicycle, and should yourself look out for pedestrians.

I live in Copenhagen, on a road that's a pedestrian zone shopping street. It is absolutely unreasonable to expect pedestrians to look out for cyclists - I'm in their space! So on the last 100m of my journey home, I must cycle at half speed or even walking speed, depending how busy it is.

If cyclists stopped being careful, cycling through the pedestrian zone would eventually get banned, like it is in Britain. (Or else enforced, I don't know if its already banned.)

> I take measures to make it easy for them to do that. I wear reflective gear and have lights at night. I bike in an easily visible space. I signal where I'm going and move in a consistent, predictable manner.

Because you're on a road. If you don't do those things, you may die. Pedestrians don't expect to get hit by vehicles on the sidewalk to the same degree. I'm a fast walker, I somewhat know your pain, but you're not entitled to tell people how to walk around, unless it's putting other pedestrians in danger.

> There's absolutely no reason that someone on a sidewalk shouldn't expect that another person, whether walking or on a bike, might also need to use the sidewalk

Is cycling on the sidewalk legal in your location? It isn't in most places, as far as I know.

Don't know about the parent but it's so legal in SF and the Peninsula that plenty of sidewalk spaces have sharrows (https://en.m.wikipedia.org/wiki/Shared_lane_marking) or signs indicating cyclists are allowed use of the path. These signs aren't necessary for cyclists to use the sidewalk though: we're simply allowed to unless a sign explicitly prohibits it.

Besides the point isn't that cyclists in these spaces shouldn't have to look out for pedestrians, it's that pedestrians make it hard even for other pedestrians to navigate and that perhaps an inequitable share of responsibility for observing one's surroundings exists.

Don't know about the peninsula but biking on the sidewalk is illegal in SF.

Bikking on the sidewalk is illegal, which might be why pedestrians don't expect it to happen.

Same here. If I have to cycle on the sidewalk, I go very slow and I do my best not to scare pedestrians, especially older people who don't feel safe near bikes. Unfortunately, not all cyclists are respectful and it creates tensions. I regularly get scolded by pedestrians.

I schools every cyclist I see on the sidewalk. The two cyclists that ran into me both said they didn't mean to (and didn't apologize, btw), and I use that as motivation for the scoldings.

Most of my walking is near store fronts and it is exceedingly dangerous to blow by open doors at the clip I see these cyclists doing. It is so frustrating to me to watch this.

Where do you people live where this behaviour is legal?

I was confused about this, too. It's illegal here (unless the sidewalk has an inset bike lane, but they're usually inset to the road instead). You see it occasionally, but I certainly wouldn't expect the people doing it to be so self-righteous about breaking the law.

It's perfectly legal in most suburbs in Washington State. It's not prohibited by state law either.