dalek2point3

related: https://academic.oup.com/restud/article-abstract/81/2/535/15...

Pounds That Kill: The External Costs of Vehicle Weight

Heavier vehicles are safer for their own occupants but more hazardous for other vehicles. Simple theory thus suggests that an unregulated vehicle fleet is inefficiently heavy. Using three separate identification strategies we show that, controlling for own-vehicle weight, being hit by a vehicle that is 1000 pounds heavier generates a 40–50% increase in fatality risk. These results imply a total accident-related externality that exceeds the estimated social cost of US carbon emissions and is equivalent to a gas tax of $0.97 per gallon ($136 billion annually). We consider two policies for internalizing this external cost, a weight-varying mileage tax and a gas tax, and find that they are similar for most vehicles. The findings suggest that European gas taxes may be much closer to optimal levels than the US gas tax.

here is the full paper in case anyone is interested: http://www.kellogg.northwestern.edu/faculty/jones-ben/htm/Ag...

few interesting findings: > Less active runners influence more active runners, but not the reverse.

> Both men and women influence men, while only women influence other women.

seems like Trump is already following in illustrious footsteps. Guess who else really cared about building highways?