Mobile Application for Acquiring Geodata on Public Transport Network - Geoinformatics for Intelligent Transportation - page 253

The stop is delimited by a boarding edge which is a border part of the platform
and is de ned as a paved area allowing safe movement of passengers when

boarding or leaving a vehicle or waiting for a connection. Most of the stops have
two boarding edges (one for each direction); larger transfer hubs can have more
than two. Another adjoining entity is a stop lane delineating the area where the PT
vehicles stop. Every boarding edge must contain at least one signpost, which is
de ned as a distinct upright marker designating bus, tram, trolleybus or other stop

[ 9 ]. The important change comparing to the existing entity registration is the rule
for calculating the position of the stop which says that the position of the stop is
calculated as a centroid of all signposts of the involved stop. Among outdoor
captured spatial entities also belong other spaces and objects related to boarding
edges or stops. These include especially the equipment or furniture of stops (e.g.
shelters, concourses, waiting areas, benches, ticket machines etc.).
The result of standard research and element analysis of PT network is the data
model of static elements respecting strict hierarchy of entities which are mutually
interconnected by unique identi

ers and which have various mutual relations

(Fig. 2 ). The unequivocal identi (e.g. 20580)

which corresponds with the unique name of the stop. The code of the boarding edge
consists of the stop ID in CIS J

er of a stop is the ID from CIS J Ř

Ř

+ the index of the boarding edge sequence (e.g.
NH1) + the orientation of the edge (e.g. N-S). The example of a unique code of the
first boarding edge of the 20580 stop with the north-south orientation is 20580/
NH1-N-S. The orientation of the boarding edge is derived from the position of the
beginning (location of the signpost) and end of the boarding edge (the position
where the vehicle enters the stop). If the PT vehicle enters the stop from the south
and heads to the north, the orientation of the boarding edge is north-south (i.e. N-S).
Possible boarding edge orientations are derived from cardinal points (N-S, S-N,
W-E, E-W, SE-NW, NW-SE, NE-SW and SW-NE). Analogically, unique codes for
IDs (20580/NH1-N-S/OZ1), stop lanes (20580/NH1-N-S/ZP1), stop equipment
(20580/NH1-N-S/V1) and access spaces (20580/NH1-N-S/PP1) related
to the boarding edge are derived from the boarding edge code. Tariff zones and
parking possibilities are tied to the stop as a whole.

Fig. 2 The outline of proposed data model for data management (Source internal)