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Mr. Geoffrey Udoka Nnadiri
Mechanical Engineering Department, De La Salle University, Manila 0922, Philippines

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Research Keywords & Expertise

0 Energy Policy
0 Renewable Energy
0 Transportation Economics
0 Transportation and management
0 Renewable & Clean Energy Resources

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Short Biography

Geoffrey Udoka Nnadiri is a graduate of BSc. in Mechanical Engineering in 2013; earned his MSc. in Mechanical Engineering in 2015 and currently taking his Ph.D in Mechanical Engineering. His researches focuses on renewal energy, transportation economics, and energy economics. As an upcoming researcher, he is looking forward to creating more impact in the society.

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Journal article
Published: 07 June 2021 in Sustainability
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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.

ACS Style

Geoffrey Nnadiri; Anthony Chiu; Jose Biona; Neil Lopez. Comparison of Driving Forces to Increasing Traffic Flow and Transport Emissions in Philippine Regions: A Spatial Decomposition Study. Sustainability 2021, 13, 6500 .

AMA Style

Geoffrey Nnadiri, Anthony Chiu, Jose Biona, Neil Lopez. Comparison of Driving Forces to Increasing Traffic Flow and Transport Emissions in Philippine Regions: A Spatial Decomposition Study. Sustainability. 2021; 13 (11):6500.

Chicago/Turabian Style

Geoffrey Nnadiri; Anthony Chiu; Jose Biona; Neil Lopez. 2021. "Comparison of Driving Forces to Increasing Traffic Flow and Transport Emissions in Philippine Regions: A Spatial Decomposition Study." Sustainability 13, no. 11: 6500.