Study: Oregon, Washington drivers’ gas consumption at lowest level in nearly 50 years

How much are high gas prices altering the Northwest’s driving habits?

A new study shows weekly gas consumption among Oregon and Washington residents at its lowest level in nearly 50 years.

“The high price of gas has taken a bite out of our driving,” said Clark Williams-Derry, research director at the Seattle-based sustainability think tank Sightline Institute.

According to an analysis released by Sightline on Wednesday (PDF), per capita gas consumption by Oregonians residents was 7.1 gallons per week in 2011. In Washington, it was 7.3 gallons a week.

At its peak in the late 1970s, per capita gas consumption in the Northwest was about 10.4 gallons a week. The region has fallen to 1964 levels, the study shows.