total miles (the first monthly drop in 30 years). We climbed on public buses and
trains,
often for the first time; transit ridership was higher in 2008 than at any
time since the creation of the interstate highway system five decades earlier.
9
Not all such behavioral changes were healthy. Many consumers switched
from cars to motorcycles, which are more fuel efficient but also more dangerous.
After falling steadily for years, the number of U.S.
motorcycle deaths began to
rise in the mid-1990s, just as gas prices began to climb. A study in the
American
Journal of Public Health estimated that every $1 increase in the price of gasoline
is associated with an additional 1,500 motorcycle deaths annually.
10
High oil prices cause things to start happening on the supply side, too. Oil
producers outside of OPEC start pumping more oil to
take advantage of the high
price; indeed, the OPEC countries usually begin cheating on their own
production quotas. Domestic oil companies begin pumping oil from wells that
were not economical when the price of petroleum was low. Meanwhile, a lot of
very smart people begin working more seriously on
finding and commercializing
alternative sources of energy. The price of oil and gasoline begins to drift down
as supply rises and demand falls.
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