Sightline Author
Clark Williams-Derry
Clark Williams-Derry: Programs director, leads Sightline's research and outreach efforts. Clark brings considerable powers of data geekery to blog topics like the climate change and transportation patterns. Previously, Williams-Derry served as senior analyst with the Environmental Working Group. Email: clark (at) sightline.org Clark's Posts
For Climate, Place Matters
Transfer of development rights can reduce emissions---but only if we get the details right.
2011: A New Record for Northwest Oil Spending
Despite lower consumption, higher oil prices lead to record spending.
Vehicle Travel, Rising and Falling
Federal data shows a short-term uptick---but a longer-term slide.
How Not To Forecast Traffic
How a Washington State transportation council misuses statistics.
Young People Are Driving Less
And so are the baby boomers.
“They Think Of A Car As A Giant Bummer”
The decline in youth car culture has serious implications for transportation policy.
How Income and Neighborhoods Affect Driving
Above a certain point, more money doesn't mean more driving.
SR-520: A Traffic Update
Traffic is down after tolling---but most has diverted to other routes.
The Demographics of Transit
A look at who rides transit in Portland and Seattle.
Commuting in Seattle and Portland
Census data shows that Seattle edges out Portland in transit commuting.
