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Published:
Dec 31, 2006Keywords:
Article Details
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Main Article Content
Characterization Of On-Road petrol Vehicle Emissions Patterns In Dar Es Salaaam City(Tanzanian)
Abstract
Motor vehicle emissions have been identified to be the major source of air pollution in most urban cities. It has serious impact on urban air quality and public health. The Governments of many countries need to adopt stringent vehicle emissions regulations to protect the air quality, the undertaking of which can only be implemented once the problem at hand is known. In the present study, the characteristics of on road vehicle emissions from the selected local ar~as at the city of Dar es Salaam in a developing country for in-use petrol vehicles for urban driving conditions ranging from idling, lOkm/h to 70km/h have been studied under the in situ measurements. This is equivalent to the European On Board Diagnostic, EOBD, testing systems. The measured vehicle exhaust emissions concentrations from the testing system have been further calculated into the vehicle emission factors for different driving conditions. The results indicate that on-road vehicle driving conditions and road characteristics have a direct effect on the characterization of vehicle emission factors. A modest correlation of the calculated average emission factors has been realized when compared with results from other countries and world bodies on the authority
