3 ms·

I see a lot of people saying that this isn't statistically significant. I think that that is probably true, but I also think that it is important to do the stat

I see a lot of people saying that this isn't statistically significant. I think that that is probably true, but I also think that it is important to do the statistical test to make sure: tesla.mult = c(1/(5:2),1:5) data.frame(tesla.mult = tesla.mult, p.value = sapply(tesla.mult, (function(tesla.mult) { poisson.test(c(5, 0), c(tesla.mult, 1))$p.value }))) tesla.mult p.value 1 0.2000000 0.0001286008 2 0.2500000 0.0003200000 3 0.3333333 0.0009765625 4 0.5000000 0.0041152263 5 1.0000000 0.0625000000 6 2.0000000 0.1769547325 7 3.0000000 0.3408203125 8 4.0000000 0.5904000000 9 5.0000000 1.0000000000 tesla.mult is how many times more total miles Teslas have driven with level-2 ADAS engaged compared to all other makers. We don't have data for what that number should be because automakers are not required to report it. I think that it is probably somewhere between 1/5 and 5. If you believe that the number is more than 1, then the result is not statistically significant.

jamincan 2y ago
Even though other manufacturers may not be reporting these numbers, Level 2 ADAS systems are pretty common as far as I can tell. Wouldn't any vehicle with adaptive cruise control and lane-keep assist be considered Level 2 ADAS?
- senkora 2y ago
  I’m not quite sure where the line is between Level 1 and Level 2 ADAS. Wikipedia says this: > ADAS that are considered level 1 are: adaptive cruise control, emergency brake assist, automatic emergency brake assist, lane-keeping, and lane centering. ADAS that are considered level 2 are: highway assist, autonomous obstacle avoidance, and autonomous parking. https://en.m.wikipedia.org/wiki/Advanced_driver-assistance_system https://en.m.wikipedia.org/wiki/Advanced_driver-assistance_s... I think that Level 2 requires something more than adaptive cruise control and lane-keep assist, but that several automakers have a system available that qualifies. My intuition is that there are more non-Tesla cars sold with Level 2 ADAS, but Tesla drivers probably use the ADAS more often. So I don’t have high confidence what tesla.mult should be. I wish that we had that data.

jamincan 2y ago

Even though other manufacturers may not be reporting these numbers, Level 2 ADAS systems are pretty common as far as I can tell. Wouldn't any vehicle with adaptive cruise control and lane-keep assist be considered Level 2 ADAS?

senkora 2y ago
I’m not quite sure where the line is between Level 1 and Level 2 ADAS. Wikipedia says this: > ADAS that are considered level 1 are: adaptive cruise control, emergency brake assist, automatic emergency brake assist, lane-keeping, and lane centering. ADAS that are considered level 2 are: highway assist, autonomous obstacle avoidance, and autonomous parking. https://en.m.wikipedia.org/wiki/Advanced_driver-assistance_system https://en.m.wikipedia.org/wiki/Advanced_driver-assistance_s... I think that Level 2 requires something more than adaptive cruise control and lane-keep assist, but that several automakers have a system available that qualifies. My intuition is that there are more non-Tesla cars sold with Level 2 ADAS, but Tesla drivers probably use the ADAS more often. So I don’t have high confidence what tesla.mult should be. I wish that we had that data.