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This bit about before autosteer install airbag deployment counts coming from vehicles with 0 miles of before autosteer install distance is certainly odd, if tru
by notroot 8y ago
This bit about before autosteer install airbag deployment counts coming from vehicles with 0 miles of before autosteer install distance is certainly odd, if true. "That is, simply because the data are missing for the Previous Mileage before Autosteer Install and the “Next Mileage after Autosteer Install,” NHTSA’s method of calculation assumes that all of the exposure mileage must belong to the “after Autosteer” category. The three airbag deployments without any exposure mileage in the “before Autosteer” category show this is not the case. " [pg.11-12]
- notroot 8y agoThe plot thickens there in Figure 3 where they suggest mistreatment of deployments/miles that occur between `Prev Mileage before Autosteer Install Reported` and `Next Mileage after Autosteer Install Reported` "result in estimates of the true exposure that are statistically biased downward – resulting in crash rates that are somewhat too large." [pg.13]
- notroot 8y agoAnd then, Figure 4, 15 deployments are counted before instillation while no additional mileage is counted for the before instillation group. [pg.16] Could the NHTSA group really have done that? It give us an incredible rate of 15/0 deployments/mi without autosteer which violates some very important law of arithmetic, statistics and common sense. I'm going to hold my breath until we see the data these claims are based on.