| Resumo : |
Climate change is driven by the rise of atmospheric greenhouse gases, with the transport sector alone having contributed with 15% (8.9 GtCO2-eq) of global emissions in 2019. A key strategy for reducing transport-related emissions is a shift in human behavior, from conventional driving to eco-driving. However, implementing eco-driving requires considering the collective climate benefit will likely be weighed against individual needs, e.g. keeping an acceptable travel time. By means of an empirical Agent-Based Model (ABM), here eco-driving is compared with conventional driving on a single-lane carriageway with regards to individual and collective impacts on carbon emissions and travel times, under different eco-driver percentages and traffic flow intensities. Eco-drivers emitted less at all flows without compromising travel time. The eco-driving carbon mitigation effect increased with flow, at 1200 cars/h reaching 67.63 tons/km·year of CO2. The eco-driver's longer following distance induced less acceleration and deceleration events, thus consuming less fuel and hence emitting less carbon. Eco-driving in single-lane carriageways is therefore collectively beneficial from emissions reduction, and individually advantageous from increased fuel economy for virtually the same travel time. |