I really mean it. I don't believe I've
ever seen a child trailer on any of the suburban 40mph arterials. I suspect you have a stronger transportation cycling culture in Eugene - cargo trailers are a rarity here.
Exposure is the problem with the NHTSA figures. They don't show exposure, just absolute frequency (sometimes with total human population as a stand-in for exposure, which is absurd). E.g. their data shows that the period between midnight and 3am has the smallest number of fatalities. What value is anyone supposed to get from that?
