efficiency

Riding the Green Wave in San Francisco

- Dan Harrison 2 Comments

For the past two years, Valencia Street in San Francisco has been experimenting with a system called “The Green Wave.” By programming the timing of traffic signals, the city of San Francisco has made it possible to ride a bicycle at a steady 13 mph (~21 km/hr) without hitting a single red light. This effectively eliminates the tiresome stopping and starting for cyclists, thus making biking even more efficient! It was recently announced that the pilot project will now become a permanent feature of Valencia Street.

Although the concept of optimizing signal timing for cyclists isn’t new, the programme in San Francisco has made some improvements that make it even better than similar systems in Copenhagen, Amsterdam, and Portland.

San Francisco’s Green Wave is already unique because it is the first in the world to work two ways simultaneously, something Mayor Newsom calls “another example of our leadership in providing quality cycling improvements for this community.”

“Those who bike in San Francisco have seen their rides become safer and more efficient. Our continued commitment is to further the progress made and further establish San Francisco as a champion for providing multiple modes of transportation,” said Newsom.

Read more at Streetblog.org, and check out their information on cycling in cities around the US.

Greening the Empire State Building [video]

- Adam Clare

I really enjoy how this video from the American propaganda department really stresses the importance of efficiency as the key element to make buildings green. We can build green all we want, but it is vital that we take existing buildings and increase their efficiency – just like the Sears Tower.

Via Worldchanging

700 KM on 4 Liters of Fuel?

- Adam Clare

Yes it is possible, FactCheck.org says so:
Can a freight train really move a ton of freight 436 miles on a gallon of fuel?

Yes.

Some rail lines do better. The Soo Line, which is the U.S. branch of the Canadian Pacific, operating in the upper Midwest, reported moving each ton of freight 517.8 miles per gallon of diesel fuel, on average. Lines operated by the Grand Trunk Corp. reported 510.5 ton-miles per gallon.

The national average figure of 436 miles is the highest on record, according to AAR, and a 3.1 percent increase from the 423-mile figure reached in 2006.

The rail industry says its fuel efficiency has increased by 85 percent since 1980. It attributes that to factors that include using new and more efficient locomotives, training engineers to conserve fuel, using computers to assemble trains more efficiently in the yard and to plan trips more efficiently to avoid congestion, and reducing the amount of time engines are idling.

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