Typical Urban Day Trips by Modes, Origins and Destinations
Urban trips have a wide variety
of purposes. The above figure illustrates a typical
set of daily trips associated with one individual. Although
the individual is directly involved in passengers movements
(in this case as the driver), freight trips are also derived
from all these daily activities.
- Passengers trips. The first trip is concerned
about commuting to the place of work. It is combined
with dropping off a child at school and then driving
to work. At lunchtime, a walking trip to a nearby restaurant
is generated. Then, a drive back home and a trip to
a shopping mall in the evening where consumption (grocery)
and leisure (cinema) activities are taking place.
- Freight trips. Many freight trips can be
derived from daily home-based and work-based activities.
The great majority of these trips are not associated
with the activities of a single individual, but usually
reflect the aggregate demand of many. For instance,
garbage can be picked up from residences and parcels
can be dropped and picked from an office building. The function
of consumption also generates substantial flows of freight.
For instance, restaurants and shopping malls have to
be resupplied, often on a daily basis.