Energy Systems and Technologies for the Coming Century ...

instance, “Blue-Line” buses which provided air conditioned service are now accessible tothe workers. The MNL model hence provides some insights about the effect of trafficcongestion on an individual’s travel choice. The improved bus serviced in Mauritius(Enoch, 2003) may have had a positive impact on selecting bus as a mode of transport towork, especially in period of road congestions.5. Modelling Car EmissionsHaving studied the various determinants that influence the travel to work choice of anindividual, it would be interesting to look at the trend in car emissions, especially CO 2emissions. An increase in car possession can instigate both congestion and environmentaldilemmas. Indeed, congestions and environment concerns are two sides of the same coin.CO 2 emissions produced during the combustion process are considered a majorecological threat as they contributed to global warming. For instance, during acute trafficcongestions, CO 2 emissions have a tendency to rise due to the unrelenting stop-and-gotraffic and acceleration and braking. Alarmingly, vehicle emissions from the landtransport sector have followed an upward trend over the past decades in Mauritius(Enoch, 2003).Vehicle emissions are a direct consequence of the mode of transport and congestions. Inan attempt to study CO 2 emissions ejected by cars, the guidelines 13 provided by TheIntergovernmental Panel on Climate Change (IPCC) are employed. The guiding principlefor calculating CO 2 emissions inventories necessitates the application of an oxidationfactor to the carbon content to account for a small portion of the fuel that is not oxidized13 More details are available online at: http://www.epa.gov/otaq/climate/420f05001.pdf.Risø International Energy Conference 2011 Proceedings Page 397