Geoscience Reference
In-Depth Information
transport systems (integrovan
ý
dopravn
í
syst
é
m, hereinafter referred to as
“
IDS
”
).
The majority of the information is
—
due to the nature of phenomenons which take
place in space
related to spatial data; they are therefore predestined to be pro-
cessed and stored in GIS. With respect to the expanding possibilities to publish and
present digital data, there is an ever growing need to deal with currency, accessi-
bility, particularity, good arrangement and accuracy of public transport (hereinafter
referred to as
—
“
PT
”
) data. Most of the IDS control bodies realize the importance and
bene
ts of quality register of spatial network data in GIS. However, the absence of
a unifying standard results in many different approaches, different data quality and
incompatibility in case of their exchange. The question of data updating is also
often discussed because, though the network is rather stable, there is a great number
of objects to register and many of their attributes are subject to frequent changes.
The goal of this text is to introduce the conception and launching of the mobile
application for collection of the PT network geodata in the area administered by the
Integrated Transport System Coordinator of the Olomouc Region which is widely
extensible and applicable in other regions. The partial goal of the text is to introduce
the data model of the registered entities established on the basis of global standards
accounting for the effort to standardize in the Czech Republic, newly established
data warehouse respecting this data model and the updating method of this
extensive database.
2 The Scope of Available Public Transport Geodata
and the Base of Their Standardization
The quality and scope of the PT network data differs in various regions of the Czech
Republic. In some regions, the data are processed in GIS, in others graphic software
(e.g. Corel Draw) is used; in regions served by carriers without central adminis-
tration there are no geodata at all [
1
]. However, data warehouses of IDS organizers
in GIS are often incomplete, the objects are not located correctly, the layers lack a
coordinate system and errors like undershoots, overshoots and missing attributes
frequently occur. The logical structure is often inappropriate as the data are not
based on a quality data model and also the way of data processing is not ideal.
The only present solution to keep the basic information regarding the movement
of PT vehicles in national scope is the uni
ed data format (hereinafter referred to as
“
ned by the Decree of the Ministry of Transport No. 388/2000 Coll., on
Regular Public Transport Timetables, and the Decree No. 175/2000 Coll.,
on Transport Rules for Public Railway and Road Transport of People [
2
]. It is a pre-
de
JDF
”
)de
ned data format designed for regular PT road and railway carriers in order to
process the timetables (hereinafter referred to as
“
Ř”
) for the purposes of the
National Information System on Timetables (hereinafter referred to as
J
).
The carrier processes the timetables in an electronic form, is responsible for them
and submits them to the appropriate transport authority for an approval and to be
“
CIS J
Ř”
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