D5 Annex report WP 4 - ETIS plus

D5 Annex WP 4: ETIS DATABASE METHODOLOGY AND DATABASE USER
MANUAL – PASSENGER DEMAND
4 MATRIX GENERATION PROCESS
4.1 Introduction
The rationale of this chapter is to provide a description of the approach used to construct a
passenger flow matrix. Furthermore this incorporates the generation of necessary input for the
computation of the policy indicators. Another part will state the data identified and the method
suggested for filling the gaps.
4.2 The general approach to construct the European passenger flow matrix
Before going more into detail concerning the approach used to face the challenge in creating an
European passenger flow matrix based on a effective applicable methodology for the future we
list the steps to go below as a first overview:
· First a synthetic trip purpose specific passenger flow matrix will be computed by using
the available in­house models (VACLAV, VIA). These models will use all the attractivity
indicators provided by WP2. The latter will cover socio­economic items as well as
geographic, historic and political variables.
· The second step is concerned with a first validation of the generation and distribution
reflected by the synthetic matrix using the DATELINE data. The latter will also be used
to treat the gaps where the existing models could not produce a first sufficient set of data.
· The third step again incorporates the existing in­house models (VACLAV; VIA) to
produce a synthetic mode specific passenger flow matrix. The necessary input like
impedances (travel­time, ­cost, service frequency, number of transfers) to be used by the
models will be provided by WP 7.
· Before a second validation can take place the assignment of the transport flows to the
network will be done in the fourth working step. For the assignment again the in­house
model (VACLAV) will be used, whereby the route choice results for the air mode will be
incorporated. This step has to be undertaken in close co­operation with WP5.
· The fifth concerns the calibration of the synthetic matrix using the observed data
available. These are link loads from link counts, point­to­point statistics, national
matrices, vehicle­km and person­km, etc. on all levels of detail available.
· The last step of the working sequence will loop back to the beginning indicating the
recursive approach taken.
It should be mentioned that while most service and cost related data are just available for the
presence (2003), the most calibration data are based on ex post information of several years.
Therefore the approach follows the idea of using existing models to forecast an ex post situation
for the calibration purposes.
Document3
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