What exactly is phantom braking, and what causes it? Phantom braking is simply when the car incorrectly brakes. The car incorrectly thinks it has to brake for various reasons:

• Braking for an overpass (people say this is due to radar but I'm pretty sure I've had it happen on vision-only, have you?)

• Braking for shadows (an obvious error)

• Braking due to speed limit (driving on the highway and the car thinks you're on the 25mph road underneath the highway)

• Misunderstanding the road - When the car doesn't understand the road it often slows down. The most extreme example of this is when your lane splits into two and the Tesla is heading right for the middle of two lanes. Not only does it jerk into one of the lanes eventually, but it will sometimes also slow down.

• Slowing for pedestrians/bikers on the sidewalk

• Misreading a stop sign

• Misreading a light

• Misjudging car distance/intentions (a car crossing in front of you who will obviously be out of the way by the time you get to that point)

What other types of phantom braking are there? I think it's pretty clear that in terms of development Tesla will have to address all of these cases. They'll fix phantom braking for overpasses at a different point in time than fixing phantom braking for misunderstanding the road. I see too many people think phantom braking is one standalone issue.

I've experienced a fair amount of jerkiness with FSD Beta, where you'll be cruising down the road at 40 mph and get small mini phantom braking down to 38 and then back up. You can tell the car is hesitating and unsure about something. Maybe the road, maybe following the GPS directions for where to turn. To me this is a pretty clear indication of just not being certain where to drive, and the car slows down for those situations.

To me it seems pretty clear that Phantom braking will be solved when FSD will be solved. Solving Phantom braking requires solving self driving. And just like interventions or crashes, we'll measure it in a ratio of events per miles driven. Maybe you get 1 phantom brake/mile on average - that's the number that will logarithmically come down.

Do you agree?