Scandinavian Working Papers in Economics

Working papers in Transport Economics,
CTS - Centre for Transport Studies Stockholm (KTH and VTI)

No 2016:25: The influence of public transport supply on private car use in 17 mid-sized Swedish cities from 1997 to 2011

Johanna Jussila Hammes (), Roger Pyddoke () and Jan-Erik Swärdh ()
Additional contact information
Johanna Jussila Hammes: VTI, Postal: Centrum för Transportstudier (CTS), Teknikringen 10, 100 44 Stockholm, Sweden
Roger Pyddoke: VTI, Postal: Centrum för Transportstudier (CTS), Teknikringen 10, 100 44 Stockholm, Sweden
Jan-Erik Swärdh: VTI, Postal: Centrum för Transportstudier (CTS), Teknikringen 10, 100 44 Stockholm, Sweden

Abstract: We analyse the impact of increased public transport supply on private car use using micro data on individuals from 17 mid-sized cities in Sweden. The data is obtained from Swedish administrative registers (tax and odometer), which exists for all Swedish adults and cars, and information of public transport supply, namely bus kilometres supplied. In a description of the data we see that that the increase of private Vehicle Kilometres Travelled (VKT) per inhabitant stagnate in the sample cities towards the end of the period 1997-2011. Our hypothesis is that changes in the supply of public transport is the main cause for this stagnation. The probability of owning a car and the demand functions for VKT are estimated. The principal finding is that private car use is reduced by increased supply of bus kilometres with an average elasticity ranging from -0.01 to -0.04. This effect is larger in peripheral areas and in larger cities. In small cities the effect is almost nil. We conclude that public transport has an effect on the private VKT of inhabitants but that the impact is relatively small and cannot be the main cause for the stagnating increase of private VKT per inhabitant in the sample cities.

Keywords: Heckman selection model; Private car use; Public transport; Sweden; Vehicle kilometres travelled

JEL-codes: R48

38 pages, November 28, 2016

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CTS2016-25.pdf PDF-file 

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