GHG

UK scientists warn of resource costs in transitioning to net-zero emissions by 2050

By Michael Brenneis The necessary transition away from burning fossil fuels for transportation could be quite resource intensive. So say leading UK scientists in a recent letter to the UK Committee on Climate Change, in response to their recommended target of net-zero greenhouse gas emissions by

Technological advances could drastically cut greenhouse gas pollution from concrete

By Eric Sundquist Most GHG emissions in transportation come from on-road vehicles, but construction is a large contributor as well. In particular, concrete manufacturing generates emissions both from energy needed to heat materials in cement kilns and from a chemical process known as

California meets GHG goals, but transportation progress faces uncertain future

By Robbie Webber As reported in the Los Angeles Times, California has met its target for reducing greenhouse gas emissions below 1990 levels four years early, an impressive feat, and one that comes while the California economy continues to flourish. But the reductions come almost entirely from

Pricing mechanisms key to reducing transportation emissions

By Chris McCahill Cities, counties, and states are setting ambitious emissions reduction goals, requiring them to cut transportation sector emissions, which account for more than a quarter of the national total. Electric vehicles powered by clean energy could make a big difference, but it is

GHG Measure back on, for now

By Alex Beckmann The Federal Highways Administration announced on Thursday that it will lift the suspension on the rule requiring state departments of transportation to measure on-road greenhouse gas emissions. With the lifting of the suspension, that requirement has gone into effect

New life for GHG tracking rule?

By Eric Sundquist In the waning days of the Obama administration, FHWA finalized the last set of performance measures for states and MPOs. That seemed to end a 4.5-year rulemaking effort that had kicked off in mid-2012 with the signing of the MAP-21 transportation bill. However, the incoming

Cleaning up the commercial diesel truck industry

By Logan Dredske In 2011, U.S. EPA and NHTSA established a national program to reduce greenhouse gas emissions and set new fuel efficiency standards for commercial vehicles starting in 2014. The requirements of this program are a driving force that is causing manufacturers to advance diesel

Building the infrastructure for zero emissions and alternative fuel vehicles

By Mary Ebeling A variety of electric and alternative fuel vehicles are increasingly available to consumers, which should be good news for efforts to reduce greenhouse gas emissions. However, adoption of these new, cleaner technologies is hampered by inadequate infrastructure needed to support

Study: One-way car-sharing reduces VMT, GHG emissions, and vehicle ownership

By Robbie Webber A recent study done by researchers at University of California-Berkeley has answered several questions many have had since car-sharing began: Does car sharing increase or decrease driving? What is the effect on overall VMT, vehicle ownership, and GHG emissions among car-sharing

New research reinforces the importance of the built environment to cycling mode share

By Bill Holloway A recently published study sheds new light on the importance of the built environment in influencing bicycle commuting and the resulting impacts on greenhouse gas emissions. The researchers first gathered household travel survey data for the years 1998, 2003, and 2008 for