Global Warming Potential Implications and Methodological Challenges of Road Transport Emissions in Nigeria

Nwanya, S. C.; Offili, I.
June 2013
Energy & Environment Research;Jun2013, Vol. 3 Issue 1, p169
Academic Journal
The purpose of this study is to examine the repercussions vehicular road transport emissions have on global warming potential (GWP), and the need to address the issue considering methodological challenges facing road transportation in Nigeria. Specific objectives of the study includes to determine the emission level in the country, to evaluate the GWP and to develop a emission mapping network on trunk A roads in Nigeria. Accurate information on these emissions is required to strengthen the mitigation and adaptation ability of the country to tackle climate change. The study relied on direct measurement technique supported by literature as well as questionnaires administered on the organised vehicle fleet operators and road traffic management agency as data gathering methods. Also, detailed analysis of questionnaires responses was carried out. Results show that road transport account for over 14% of greenhouse gases. Survey findings indicate that excessive smoke emission offence accounts for 1-2% of the annual road traffic offences in Nigeria. Using Statistical Package for Social Science (SPSS) software version 16, five fitted simple linear regression models were developed. With these fitted models it is possible to map the gas concentrations on the kilometre travelled. Examination of the National Vehicle Identification Scheme (NVIS) revealed a rise in the periodic plate number generation from yearly record of 788,169 in 2001 to 791,832 in 2009. Human capacity requirements, based on yearly Drivers Licence (DL) processed, increased by 55% between 2000 and 2010. Three mutual strategies namely renewed urban and rural road transport infrastructure availability, regular fleet maintenance and capacities building for improved behavioural change of road users were recommended to help control road transport emissions. These measures if inflexibly implemented will change the transport sector from being a major global warming risk factor to that of Eco-friendly sector.


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