1. Datex II in the cooperative ITS Corridor
DATEX II User Forum, Dublin, 14 September 2016
Dipl.-Math. Werner Scholtes
Werner Scholtes – IT-Beratung

3. Cooperative ITS Corridor
Started in 2013
Cooperation between Austria, Netherlands and Germany
Improve road safety and traffic flow
Enable roadworks safety trailers for cooperative communication
Technology shall be used for introduction of further C-ITS functions

4. Architecture of the C-ITS-Corridor

5. Architecture of a cooperative centre
Traffic lights
OCIT-O
DATEX II
TCC
DATEX II
Trailer ?
ITS G5
Urban TMC
Cooperative Centre
OCIT-C
„Cooperative Centre of Babel“
Outstation
Serviceprovider
RIS
DATEX II
TLS
TPEG

6. Goals and Challenges Connect Trailers
Connect Roadworks information centre
Connect Traffic Control Centre
Connect MDM
Different communication interfaces are in use
Different data models are in use
Different protocols are in use
How can this variety be supported without loosing control?

7. Difference between data and protocol
Data models correlate to languages
German
English
Chinese
Protocols correlate to communication types
Talk
Telephone call
Letter
Data is essential, not protocol

8. Structure of interfaces
Data
Conceptual data description Platform Independent Model (PIM)
Logical data model Platform Specific Model (PSM)
Physical data coding
Protocol
Application protocol
Transfer protocol
Example
UML, …
XSD, ASN.1, …
XML, ASN.1-PER, JSON, …
SOAP, REST, SNMP, ITS G5, …
HTTP, Websockets, ITS-transport, …

9. Interface stacks in C-ITS Corridor
General structure
DATEX II XSD
DATEX II XML
HTTP
SOAP
DATEX II
DATEX II UML
ICS XSD
ICS XML
Websockets
STOMP
ICS
ICS UML
ITS ASN.1
ASN.1 UPER
ITS Transport
ITS G5
ITS-G5
ITS TS PDF ?
Data
Conceptual
Logical
Physical
Protocol
Application protocol
Transfer protocol

10. What happens?
Roadworks
trailer
Code with
failure
Chinese whispers!

11. Project specific solution
Platform independent data model: ICS UML
Work in progress 
DATEX II UML
ICS UML
DATEX II XSD
ICS XSD
ITS ASN.1
DATEX II XML
ICS XML
ASN.1 UPER
SOAP
STOMP
ITS G5
HTTP
Websockets
ITS Transport

12. General project specific solution
Collect platform specific models (PSMs)
Develop canonical data model (PIM)
Map PIM to every PSM
PSM 2
PSM 3
PSM 1
PIM
PSM 4
PSM 6
PSM 5

13. General cross-project solution
Many PIMs
ITS-Metadata Registry
ITS-Metadata Registry
ITS-Frame architecture
ITS-Reference architecture
PSM 1
Coding 1
Transfer 1
Application 1
PIM 1
PIM 2
PIM n
PSM 2
PSM n …
Coding 2
Coding n
Application 2
Application n
Community solution
Future dreams
Transfer 2
Transfer n

14. Thank you for your attention Any questions?