Measuring the potential emission reductions from a shift towards public transport
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Journal ArticleDate:
2019Access:
openAccessCitation:
Carroll, P., Caulfield, B. & Ahern, A., Measuring the potential emission reductions from a shift towards public transport, Transportation Research Part D: Transport and Environment, 73, 2019, 338 - 351Download Item:
Carroll et al (2018).pdf (Accepted for publication (author's copy) - Peer Reviewed) 922.6Kb
Abstract:
The research presented in this paper investigates the behavioural response and subsequent
appraisal of a range of policy incentives devised to encourage greater use of sustainable travel
options within the Greater Dublin Area (GDA). Interventions were assessed by employing
four-stage modelling techniques, as a tool to identify signs of mode shifting behaviour from
single occupancy vehicle (SOV) use to public transport modes. Extensive modelling work
was conducted in collaboration with the National Transport Authority (NTA) of Ireland
utilising the National Regional Modelling System (RMS) to represent the sustainable policy
changes. Parameter modifications in the mode and destination choice and trip assignment
stages were made to account for improvements made to frequency, time and cost attributes of
public transport modes included in the model. Subsequent changes in vehicle kilometres
travelled of various modes modelled were then utilised to estimate the potential emissions
savings. In addition to this, the potential monetary savings generated from a reduction in
emissions were calculated. The key results produced from this study found that an increase in
the mode share of public transport of up to 2.87% could be achieved in the GDA. Up to
1.76% of which was estimated to come directly from private car trips, as a result of
implementing the policy incentives tested. Furthermore, daily emissions savings of up to
431.58 tonnes of CO2, 0.95 tonnes of NOx, and 0.046 tonnes of PM2.5 were also estimated.
URI:
https://www.sciencedirect.com/science/article/pii/S1361920918311003http://hdl.handle.net/2262/89555
Sponsor
Grant Number
Environmental Protection Agency (EPA)
Author's Homepage:
http://people.tcd.ie/caulfibDescription:
PUBLISHEDType of material:
Journal ArticleURI:
https://www.sciencedirect.com/science/article/pii/S1361920918311003http://hdl.handle.net/2262/89555
Series/Report no:
Transportation Research Part D: Transport and Environment;73;
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Full text availableSubject (TCD):
Smart & Sustainable Planet , Environmental Impacts of TransportLicences: