Original Research

Domestic airport passenger access mode choice decisions in a multi-airport region of South Africa

Stephen Carstens
Journal of Transport and Supply Chain Management | Vol 8, No 1 | a149 | DOI: https://doi.org/10.4102/jtscm.v8i1.149 | © 2014 Stephen Carstens | This work is licensed under CC Attribution 4.0
Submitted: 19 June 2014 | Published: 01 December 2014

About the author(s)

Stephen Carstens, Institute of Transport and Logistics Studies (Africa), University of Johannesburg, South Africa; Department of Transport and Supply Chain Management, University of Johannesburg, South Africa


The ground access mode used by air passengers to an airport has a vital impact on infrastructural and environmental decisions. An important aspect of a passenger’s mode choice is the sensitivity to factors such as access time and access cost. The objective of this research was to analyse air passenger’s sensitivity to access mode choice attributes, that is,access time, access cost, parking time and parking cost at two airports in Johannesburg, South Africa. A stated choice experiment was used to obtain the information and a latent class model was estimated. In general, discrete choice experiments are designed to reveal respondent(preference) heterogeneity and the latent class model allows for this heterogeneity to be modelled discretely. The estimated results indicated that three latent classes provided the best fit with preference heterogeneity evident from the set of parameter estimates. The access mode used was found to be the only significant covariate in the class assignment model. The respondents’ willingness to pay for a reduction in access time was estimated and it indicated that respondents had the highest access time willingness-to-pay value for the taxi as access mode. In addition, it was estimated that passengers being dropped off at the airport had a higher access time willingness-to-pay than passengers that used their own vehicles to the airport. The research results confirmed the presence of respondent heterogeneity (according to access mode) which resulted in different access time willingness-to-pay values.


access mode; choice modelling


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