Large scale investment is being made in Intelligent Transportation Systems (ITS) like adaptive traffic systems, CCTV, variable message signs, parking systems, and footfall counters. Dublin City Council (DCC) has real-time data on Dublin Bus locations and traffic/pedestrian flows. DCC is providing IBM access to this data and server space to allow visualization of problems across the city and at specific locations, while handling data feeds in XML formats. Real-time data access through systems like SCATS and real-time passenger information systems requires expensive per-connection licenses, so a single Dublinked license is proposed to allow multiple external requests while caching data.

1. • Large scale
investment in
ITS Systems
• Adaptive Traffic
Systems
• CCTV
• VMS
• Parking
Systems
• Footfall
Counters
• Large Data
Storage

3. Traffic Flow
Data
Junction Operation
Pedestrian Flow

4. DCC has Real Time data on Dublin Bus Fleet
Allow IBM access to data and provide server space.
1000 vehicles provide location information every 20 – 30 Seconds
Provide Visualisation of data
Allow a city wide view but also provide the means of
seeing where problems are.
Handle verbose XML SIRI standard records.

5. Real Time data Issues
• What is real Time data :-
•Depends on what the final use of it is.
•Real Time data to DCC is data which we collect
in real time, analyse and use it to adjust
alert or inform in as close to real time as
possible.
• Real Time data goes “stale “ very quickly and
becomes historic data`.

6. Real Time Issues
• Take two systems as an example
• SCATS Traffic Control System
• Real Time Passenger Information
• SCATS has an “ITS “ port which provides a means of retrieving
data from SCATS in Real Time. This is a licenced product and
around €20,000 per connection, also multiple connections will
have implications for server processing and architecture.
• THE RTPI system also has a SIRI interface which is a licenced
product and costs €25,000 per connection. Again multiple
connections has severe implications for server processing etc.

7. One Dublinked licence
SCATS
DCC
Interface
One Dublinked licence
RTPI
DCC
Interface Multiple External request s
Cached Solution for multiple access