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CU Denver study finds ride-hailing increases vehicle miles traveled

Green Car Congress

increase in the miles cars travel for ride-hailing passengers in Denver’s metro area, according to a study published this week in the journal Transportation by researchers at the University of Colorado Denver. Lead author and CU Denver civil engineering Ph.D. Ride-hailing accounts for approximately an 83.5% Marshall, W.E.

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University of Texas at Austin study measuring methane emissions released from natural gas production

Green Car Congress

A research team led by The University of Texas at Austin, and including engineering and environmental testing firms URS and Aerodyne Research, is conducting a major field study to measure methane emissions from natural gas production, about which little empirical data exist.

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Satellite method provides insight into ozone-NOx-VOCs sensitivity for different locations

Green Car Congress

With a combination of computer models and space-based observations, Xiaomeng Jin at the Lamont-Doherty Earth Observatory at Columbia University and her colleagues used the concentrations of ozone’s precursor molecules to infer whether ozone production increases more in the presence of nix, VOCs, or a mix of the two, for a given location.

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NREL researchers report on two approaches to upgrading biomass pyrolysis oil for hydrocarbon fuels

Green Car Congress

At last month’s World Renewable Energy Forum 2012 in Denver, Colorado, researchers from the US National Renewable Energy Laboratory presented papers on two different approaches to upgrade pyrolysis oils to hydrocarbon fuels or fuel intermediates. Minimizing coke formation and overcoming the hydrogen deficiency of biomass remain challenges.

Oil 246
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Study concludes US will not meet Renewable Fuel targets with ethanol as primary biofuel

Green Car Congress

If ethanol is the US’ primary biofuel, it will be “ essentially impossible ” to achieve the federal Renewable Fuel Standard volume mandates because of the ethanol blending limit (the “blend wall”), regardless of whether it is the current 10% or raised to 15%, according to a study by researchers at Purdue University.

Renewable 225
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Modelling the Impact of PHEVs on Ozone in Denver

Green Car Congress

Researchers at the University of Colorado, Boulder and the National Renewable Energy Laboratory (NREL) modeled the emissions impact had plug-in hybrid electric vehicles (PHEVs) replaced light duty gasoline vehicles in the Denver, Colorado area in summer 2006. For other areas, where PM2.5 Brinkman et al. Hannigan and Jana B.

Denver 170
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Update: 10 Best Car Sharing Programs

Clean Fleet Report

Different types of non-ownership alternatives promise to be the way of the future. as well as 600 universities throughout the country. By succeeding at a university such as USC in Los Angeles, Zipcar has a base to expand in Southern California’s over 10 million car drivers and massive fleets. Zipcar’s potential is enormous.

Cars 98