I may be oversimplifying, but after a few weeks using FSD Beta I've come to the following conclusion: perception is great, path planning and driving logic not so much.
Perception is great at least based on the 'mind of the car' visualizations. Intersections, lane lines, stop signs/traffic signals, and other vehicles are represented accurately. I'm sure there are still some hard problems here - unusual objects in the driving path, accurately measuring the speed and distance of other vehicles, insufficient visibility at heavily occluded intersections, etc. But for the most part the visualizations are pretty damn accurate.
That said, FSD Beta still has some pretty serious issues, and it seems to me like these all relate to path planning and the hard coded-driving logic, aka how to navigate the space that is being perceived. Specifically:
Perception is great at least based on the 'mind of the car' visualizations. Intersections, lane lines, stop signs/traffic signals, and other vehicles are represented accurately. I'm sure there are still some hard problems here - unusual objects in the driving path, accurately measuring the speed and distance of other vehicles, insufficient visibility at heavily occluded intersections, etc. But for the most part the visualizations are pretty damn accurate.
That said, FSD Beta still has some pretty serious issues, and it seems to me like these all relate to path planning and the hard coded-driving logic, aka how to navigate the space that is being perceived. Specifically:
- Turns where the vehicle does not have guaranteed right of way (i.e. left/right turns at uncontrolled intersections, or right on red, or left without a green arrow). In these situations FSD is incredibly cautious to the point of being useless. It stops too far back, creeps way too slowly, and even when there is no cross traffic it can sit for far too long before making a decision, sometimes only making a move when the opportunity is gone.
- Driving on unmarked roads. Not only does the car drift way too far into the middle of the road, but turning and braking can be incredibly jerky when navigating unmarked roads. Again, the drivable space is accurately displayed on the screen, yet the car jerks around violently and seems extremely unsure of how to proceed. Seems strange given how accurate the drivable path projection is.
- Smooth completion of a left turn. This one definitely seems like it's path planning. Turns at small/simple intersections usually work well, but at larger intersections the car can turn too sharply and end up heading for the divider or the yellow line, and then have to swerve back to make it into the driving lane.