DENVER --- The city and county of Denver have turned to Driving Change, an Internet-based vehicular greenhouse gas (GHG) tracking system, to significantly curb GHG emissions.

In March 2008, Denver launched a pilot test of Driving Change, which uses telemetry technology to send vehicle operating information over the Internet to a GHG management system that provides each participating driver with individualized, online emissions and driving dashboards. These dashboards provide drivers with details of their carbon dioxide (CO2) emissions, a breakdown of driving habits that cause excess carbon emissions, including idling and aggressive driving events (hard braking, fast starts), and the cost of excess fuel consumed.

There are 160 city vehicles and 240 citizen vehicles that have participated in the pilot. According to the U.S. Environmental Protection Agency, motor vehicles are the fastest-growing source of CO2. It has been estimated that GHG from vehicles accounts for 30 percent of the city and county of Denver's total carbon footprint.

The GHG management system was provided by Enviance Inc., a California-based company, and the telemetry was provided by Cartasite Inc., a Denver-based company.

In addition to having 30 employees participate in Driving Change, Denver-based EnCana Oil & Gas (USA) Inc. underwrote the program.

According to program participants, findings from the Driving Change Denver pilot program demonstrated that:

-- Measurement improves performance: From May through November, there was a 10 percent overall driving improvement in participating vehicles in Denver (as measured by CO2/mile). This includes reductions in engine idling, fast accelerations and fast stops.

-- Tracking driving behavior has a great impact on engine idling: From May through November, idling decreased by more than 35 percent among participating vehicles, which equates to a reduction of 5 minutes of idling (or a little less than 1 pound of CO2) per vehicle, for every hour of operation.

-- Driver education works: As Driving Change participants were educated in the program's goals and tracked their results, they became more likely to turn their vehicles off. For example, participating Denver drivers provided with more extensive education reduced engine idling more than 40 percent through the end of November.

Denver Mayor John Hickenlooper said: "Once the Driving Change system revealed and quantified the idling issue, we were able to use the system to target the problem and measure our success in reducing this wasteful practice, allowing us to reduce greenhouse gas emissions and save money on fuel at the same time."

"Driving Change is another example of Mayor Hickenlooper's efforts to make Denver a truly sustainable city," said David Armitage, CEO and President of Cartasite Inc. "We are honored to have provided the telemetry technology that made it possible to extend GHG management to the automobile."

"Having provided the first Internet-based GHG management system to the commercial sector in 2005, it is exciting to prove that the GHG management power of the Enviance System can be extended to tackle vehicular GHG," said Lawrence Goldenhersh, CEO and president of Enviance.

More information on the Driving Change pilot program is available at www.drivingchange.org.