786 7969; fax: +46 90 786 6695.
E-mail address: louise.eriksson@psy.umu.se (L. Eriksson).
nonrenewable fuels, congestion, and extensive land use
are evident. Gradually, long-term sustainable transport can
be achieved if households reduce their use of private cars,
for example by traveling shorter distances, combining
single trips into trip chains, traveling together with others
in a car pool
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