National versions
ASTRA-IT
The ASTRA-IT model builds on the European model, adding specific features
and providing a regional break down for Italy of a group of key variables.
Basically the original model is largely untouched with the exception of
the zoning system used for the transport module, based on 21 NUTS2 zones.
A NUTS2-based origin-destination matrix is used in the transport module,
where also intra-NUTS2 trips are modelled in three different distance
bands, thus providing a full coverage of mobility. Several transport parameters
(e.g. transport costs) are defined at the regional level as well. The
transport module can work entirely with endogenous data, but it can also
exchange variables with an external network model in order to further
improve the modelling of transport demand (since transport networks are
not modelled in ASTRA-IT). In ASTRA-IT the regional detail is available
not only for transport demand, but also for the car fleet module (where
the development of regional fleets is fully simulated) and the environmental
module (computing emissions) and the economic module. A working version
of the model is existing and further improvements (e.g. a brand new economic
model) are being experimented.
