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Shreya Dey

PhD Researcher (Centre for Transport Research)
Dept. of Civil, Structural & Environmental Engineering


Greening Transport

Keywords: GHG emissions; passenger car fleet; public transport bus fleet; sustainable fuel options; alternative fuels and technologies; emission reduction; NOx; COPERT; Diesel Euro5/Euro6 light duty vehicles; emission inventory; emission projection.


Member States of the European Union (EU) are moving towards a reduction of traffic related emissions: the EU has set a target that 10% of all fuels, based on energy content, should be renewable by 2020. Buses account for 50-60% of the total public transport offer in Europe and 95% use diesel fuels. 72.8% of the total GHG emissions from transport sector is shared by road transport alone (EEA, 2014).

However, a wide range of alternative fuels and technologies are now available for both cars and buses. The potential of all these alternative options in reducing the GHG emissions will be examined. Then various scenarios will be designed to study the emission reductions and to access the appropriate scenario that will lead Ireland to meet the EU’s 2020 and 2030 targets.

The main objectives of this project are to (1) Examine the most appropriate Environmental Models and Data, (2) Examine the emission reductions from changes in the private car fleet, (3) Examine the emission reductions from changes in public transport bus fleet, (4) Emission projections and compliance with EU’s 2030 targets.


Project Supervisor: Assistant Prof. Bidisha Ghosh & Associate Prof. Brian Caulfield