5 ms·

L3 is profoundly unwise. L3 can disengage at any moment. The attention required of the human in order to drive safely exceeds that required in L2, and is much m

L3 is profoundly unwise. L3 can disengage at any moment. The attention required of the human in order to drive safely exceeds that required in L2, and is much more difficult to maintain.

belter 3y ago
It will give a 10 second warning - https://youtu.be/1gjweWq8qAc https://youtu.be/1gjweWq8qAc
- dbcurtis 3y ago
  I have verrrry limited connectivity RN so can’t watch video. If they really do give 10 seconds, then does the system remain engaged for the “dog/kid darting out between parked cars” scenario? And engage a collision avoidance trajectory planner? 10 seconds is an eternity, even in 35 mph zones. (60 kph)
  - Retric 3y ago
    Yes L3 must handle the dog running into the road situation, this Mercedes will even do evasive driving when possible to avoid a collision.
foepys 3y ago
Mercedes' system will always give the driver a 10 seconds warning before disengaging. Enough to put away your phone and assess the situation.
Gasp0de 3y ago
How is that different from L2? SAE Levels 0-2 demand constant supervision and the ability to take over at any moment. Level 3 is actually better, as it only requires you to be able to take over after a short (e.g. 10 second) notice. Levels 4 and 5 do not require the driver to be able to take over (e.g. drunk, sleeping, no license). https://www.sae.org/blog/sae-j3016-update https://www.sae.org/blog/sae-j3016-update
- dbcurtis 3y ago
  How short is short? How fast is your OODA loop? L3 plays into known human factor weaknesses.
ajross 3y ago
I don't know that it's "unwise"; that depends on failure rate. But it's absolutely true that the practical difference between "human must supervise" and "human must be ready to take over" is MUCH smaller than people want it to be. Mostly everyone wants to yell about Elon Musk and "2 vs. 3" is ammunition.
Retric 3y ago
L3 requires zero attention, that’s what makes it L3 vs L2. The driver needs to stay sober, awake, and in the drivers seat but are supposed to be able to read a book or something. A L3 car is required to be able to handle all short term situations and only do a handoff with 5-10 seconds of warning. The idea is it’s ok for the car to come to a complete stop and say I have no idea what to do, but it isn’t ok to simply fail on a freeway at 70 MPH. Failing safely is a huge difference, as mentioned in the article: if a driver doesn't take over when prompted the car activates the hazard lights and slowly comes to a stop before making an emergency system call to alert first responders to a potential problem.

L3 is profoundly unwise. L3 can disengage at any moment. The attention required of the human in order to drive safely exceeds that required in L2, and is much more difficult to maintain.

belter 3y ago

It will give a 10 second warning - https://youtu.be/1gjweWq8qAc https://youtu.be/1gjweWq8qAc

dbcurtis 3y ago
I have verrrry limited connectivity RN so can’t watch video. If they really do give 10 seconds, then does the system remain engaged for the “dog/kid darting out between parked cars” scenario? And engage a collision avoidance trajectory planner? 10 seconds is an eternity, even in 35 mph zones. (60 kph)
- Retric 3y ago
  Yes L3 must handle the dog running into the road situation, this Mercedes will even do evasive driving when possible to avoid a collision.

foepys 3y ago

Mercedes' system will always give the driver a 10 seconds warning before disengaging. Enough to put away your phone and assess the situation.

Gasp0de 3y ago

How is that different from L2? SAE Levels 0-2 demand constant supervision and the ability to take over at any moment. Level 3 is actually better, as it only requires you to be able to take over after a short (e.g. 10 second) notice. Levels 4 and 5 do not require the driver to be able to take over (e.g. drunk, sleeping, no license). https://www.sae.org/blog/sae-j3016-update https://www.sae.org/blog/sae-j3016-update

dbcurtis 3y ago
How short is short? How fast is your OODA loop? L3 plays into known human factor weaknesses.

ajross 3y ago

I don't know that it's "unwise"; that depends on failure rate. But it's absolutely true that the practical difference between "human must supervise" and "human must be ready to take over" is MUCH smaller than people want it to be. Mostly everyone wants to yell about Elon Musk and "2 vs. 3" is ammunition.

Retric 3y ago

L3 requires zero attention, that’s what makes it L3 vs L2. The driver needs to stay sober, awake, and in the drivers seat but are supposed to be able to read a book or something. A L3 car is required to be able to handle all short term situations and only do a handoff with 5-10 seconds of warning. The idea is it’s ok for the car to come to a complete stop and say I have no idea what to do, but it isn’t ok to simply fail on a freeway at 70 MPH. Failing safely is a huge difference, as mentioned in the article: if a driver doesn't take over when prompted the car activates the hazard lights and slowly comes to a stop before making an emergency system call to alert first responders to a potential problem.