[outworlder]

That's... appalling. My 2019 Leaf has absolutely zero problems maintaining distance with adaptive cruise control, using the ancient technology formerly known as radar. It can somehow even see stationary vehicles, something I thought wasn't feasible.

[robonerd]

>It can somehow even see stationary vehicles, something I thought wasn't feasible.

Radar seeing stationary objects is trivial, it sees them just like it sees any other. The trick is seeing only the stationary objects which are actually relevant; e.g. not seeing a street sign suspended above the road, or a tree next to the road, but only the stationary objects in the path of the car. The radar configuration that Tesla use[s/d] apparently has awful angular resolution, making this differentiation difficult if not impossible. But this isn't inherent to all radar technology; some radars can have good angular resolution. For instance with SAR or ISAR, you can produce high resolution 2d images. But I don't know what kind of radar systems your Leaf has.

[judge2020]

Doesn't it also have to handle things like windy roads and steep angle changes when going uphill? it seems you need both vision and radar to confirm things, eg:

- when on level ground approaching a steep hill, the radar might not know if the object directly in front of the car is just a continuation of the road or not

- when approaching a sharp curve in the road, is the object directly in front of the car actually in its path, or is it just on the side of the road

[razemio]

Are you sure about stationary? My 2018 leaf does not do that. I replaced the system with Open Pilot and never looked back. I also have a Tesla Model Y sometimes for testing. It is amazing how much better OpenPilot is. On the highway it is unbeatable and also able to recognize stationary objects like cars and motorbikes.

[paxys]

Yeah, never had a problem with my Hyundai as well. It also does lane keep assist perfectly on the highway using just the front cameras.

[manmal]

My Hyundai doesn’t seem to recognize stationary objects though. Also, the seconds after a car has merged into my lane in front of me are scary - my car doesn’t immediately recognize the new situation.