> Maybe it thought they were on a bike lane? Where I'm from it's illegal to ride like that in a group outside of police-sanctioned events

I’m in Massachusetts where lane splitting is legal in some cases (single lane each direction, posted speed limit below some amount, probably something else). Some other states have similar rules, but in most it’s flatly illegal.

I believe California is an unusual outlier in that lane splitting is allowed with no additional restrictions.

> you're supposed to ride one after the other and keep right.

In many states bicycles are entitled to use the full lane. I often feel safer riding in the center of the lane for a few reasons:

1. The center of the lane is less likely to have small ride-ruining debris like glass, sticks, and nails

2. Cars surprisingly give me more space when passing if I’m not riding off to the side

3. It seems that potholes occur more often to the side of the rode than in the center, or at least get fixed more often when they’re toward the middle of the road

Note: I’m talking about the middle of the lane vs the side, not the middle of the lane vs the shoulder. The shoulder isn’t something you should travel in anyway, even on a bike.

FYI, lane splitting coventionally refers to driving a small vehicle between lanes of stopped or slow cars, rather than multiple small vehicles riding side by side within one lane [1]. The first is unconditionally illegal in Massachusetts, while the second is conditionally legal like you say.

[1]: https://en.wikipedia.org/wiki/Lane_splitting

Thank you! I was indeed using the wrong term. It looks like 39 states allow bikes to ride two-abreast (sometimes more).

Is it also illegal to ride into oncoming traffic, in the wrong lane?

Still no excuse for driving on the opposite lane ;-)

The unicycle rider with camera was doing the same - riding the opposite lane behind Waymo

Sure, but this article is about Waymo. We can create a new link about "unicycle rider with a camera driving on the opposite lane", but that's another topic

The topic would not gather nearly as much attention. Why?

No-one is suggesting that that person should be duplicated a hundred million times and drive two tonne objects through every city in the world, you see. "Magic driving robot does stupid thing" is a much more interesting story than "arbitrary human does stupid thing", because the end goal is to have _a lot_ of the magic driving robot.

The devices they're riding are called electric unicycles, often abbreviated to EUC.

Aka face crayon

r/meatcrayon