Abstract
The warming of the climate system has raised a lot of concerns for decades, and this is traceable to human activities and energy use. Conspicuously, the transportation sector is a great contributor to global emissions. This is largely due to increasing dependence on private vehicles and a poorly planned public transportation system. In addition to economic impacts, this also has significant environmental and sustainability implications. This study demonstrates a novel approach using spatial logarithmic mean Divisia index (LMDI) to analyze drivers of traffic flow and its corresponding CO2 emissions in regions through an illustrative case study in the Philippines. Population growth is revealed as the main driver to traffic flow in most regions with the exception of a few regions and the national capital which are driven by economic activity. The economic activity effect shows positive trends contributing positively to traffic flow which is greatly linked to income level rise and increase in vehicle ownership. Concerning the impacts, results revealed that an increase in economic activity generally causes traffic intensity to decrease, and switching to more sustainable modes is not a guarantee to reduce carbon emissions. The authors recommend increasing equity on the appropriation of transport infrastructure projects across regions, quality improvement of public transport services and promoting mixed-use development.
Highlights
Published: 7 June 2021Scientific assessments disclosed by the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) revealed that the warming of the climate system is likely due to human activities such as the combustion of fossil fuels and land use [1]
Energy Agency [3], the annual CO2 emissions from fossil fuels have increased from an estimate of 23.6 billion tons of carbon dioxide (GtCO2 ) to around 32.4 GtCO2 from 1990 to
Transportation is noted to be the fastest consumer of fossil fuels and source of carbon emissions
Summary
Published: 7 June 2021Scientific assessments disclosed by the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) revealed that the warming of the climate system is likely due to human activities such as the combustion of fossil fuels and land use [1]. The most important drivers of increases in CO2 emissions from fossil fuel combustion had been traced to economic and population growth [2]. Energy Agency [3], the annual CO2 emissions from fossil fuels have increased from an estimate of 23.6 billion tons of carbon dioxide (GtCO2 ) to around 32.4 GtCO2 from 1990 to. 2014, and in 2018, the global energy consumption grew almost twice the average growth rate since 2010 [4]. In 2012, the transportation sector accounted for 23% of global CO2 emissions due to fossil fuel combustion. With rapid urbanization in developing countries, energy consumption and CO2 emissions by metropolitan vehicles are expanding quickly as the transport sector continues to experience challenges in reducing CO2 emissions [5].
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