Urban myth busting: Congestion, idling, and carbon emissions``


By Joe Cortright, City Observatory

Increasing road capacity to reduce greenhouse gas emissions will backfire

Time for another episode of City Observatory’s Urban Myth Busters, which itself is an homage to the long-running Discovery Channel series “Mythbusters” that featured co-hosts Adam Savage and Jamie Hyneman using something called “science” to test whether commonly believed tropes were really true.
...

Today’s claim comes from the world of transportation. As we all know, transportation is now the single largest source of greenhouse gas emissions. Here, when confronted with the need to do something to address climate change, the highway lobby likes to point out that cars emit carbon, and when they’re idling or driving in stop and go traffic, they may emit more carbon per mile than when they travel at a nice steady speed. And of course, they have a solution for that: spend more money expanding capacity so cars don’t have to slow down so much. That’ll be great for the environment, or so the argument goes.
...

In place of the now retired duo of Adam and Jamie, we’ll turn this question over to Alex and Miguel–Alex Bigazzi and Miguel Figliozzi, two transportation researchers at Portland State University. Their research shows that savings in emissions from idling can be more than offset by increased driving prompted by lower levels of congestion. The underlying problem is our old friend, induced demand: when you reduce congestion, people drive more, and the “more driving” more than cancels out any savings from reduced idling.
...

http://cityobservatory.org/urban-myth-busting_idling_carbon/

by B' Spokes

Like most people I live a hectic life and who has the time for much exercise? Thanks to xtracycle now I do. By using my bike for daily activities I can get things done and get an hour plus work out in 15 minutes extra of my time, not a bad deal and beats taking the extra time going to the gym. In case you are still having trouble being motivated; the National Center of Disease Control says that inactivity is the #2 killer in the United States just behind smoking. ( http://www.cdc.gov/nccdphp/bb_nutrition/ ) Get out there and start living life! I can carry home a full shopping cart of groceries, car pool two kids or just get lost in the great outdoors camping for a week. Well I got go, another outing this weekend.
  • Currently 0.00/5
Rating: 0.00/5 (0 votes cast)

Share It!

Trackback

Trackback URL for this entry: https://www.baltimorespokes.org/trackback.php?id=20170705225654181

No trackback comments for this entry.

Login required to comment
Be the first to comment