1. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany 1 Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus Federal Highway Research Institute - BASt

2. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel, Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus, BASt - 2 - Implementation of an ITS-system in Germany since about 30 years. 1975: VRZ Aichelberg 2005: VZ Hessen

3. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel, Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus, BASt - 3 - Average daily traffic (ADT) on German highways.

4. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel, Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus, BASt - 4 - Current and planned (till 2007) systems: 1.200 km Section Management 1.700 km Network Management Programme on traffic management for the federal motorways in Germany.

5. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel, Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus, BASt - 5 - Foreign Traffic Centre Traffic Control Centre Sub-Centre Outstation Detectors, Variable Message Signs,... Directives TCC SC OS SC OS Regional Traffic Information Centre Communication interface to external Systems (e.g. Datex) Instructions for the Equipment of Traffic Control and Sub Centres (MARZ), "AK VRZ" Instructions for the Equipment of Traffic Control and Sub Centres (MARZ), "AK VRZ" Technical Specifications for Outstations (TLS) Traffic Control System Germany.

6. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel, Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus, BASt - 6 - Roadside Outstation Traffic Control Centre / Sub-Centre TLS:Technische Lieferbedingungen für Streckenstationen / Technical Specifications for Outstations Basic idea of the TLS: n to define functional groups for roadside equipment, n to standardise the interfaces and communication protocols, n to create a common data modelling, n to make the equipment of different suppliers compatible, n to define and test performances and n to allow open and clear tendering and system operation. Interface between Outstations and TCCs.

7. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel, Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus, BASt - 7 - Structure of TLS. n FG 0: Reserved for testing purposes n FG 1: Traffic data acquisition n FG 2: Weight in motion n FG 3: Environmental data acquisition n FG 4: Variable message sign and variable direction sign control n FG 6: Operational messages and control n FG 7: Control of external systems n FG 8: Speed control systems n FG 9: Ramp metering n FG 10 to 127: Reserved for subsequent universal definitions n FG 128 to 253: Res. for manufacturer defined function groups n FG 254: System control (internal) n FG 255: Reserved for special applications

8. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel, Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus, BASt - 8 - Example of an Outstation.

9. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel, Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus, BASt - 9 - n Preliminary Issue in 1988, content: Traffic data acquisition n Issue in 1990 with additional features on communication n Issue 1993: first complete edition, compulsory for roadside traffic control equipment n Main Draft in 1997 n Issue 2002: optimised, revised edition n Issue 2007 in preparation: new communication technique and additional features History of TLS.

10. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel, Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus, BASt - 10 - n Communication restricted by infrastructure of the 80´s n Partyline n 1200 Baud n datagram size <256 bytes n Research projects: Recommendations for a new TLS u Communication technology u Technical u Organizational Constraints of todays TLS

11. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel, Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus, BASt - 11 - n Recommendation: „TLS goes TCP/IP“ n Todays standard communication protocol n Austrian ASFiNAG: Adoption of TLS, but with TCP/IP extensions n NTCIP (USA) based on TCP/IP (UDP) n In-field communication: PROFIBUS -> PROFINET n TT: DATEX(2) TCP/IP

12. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel, Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus, BASt - 12 - n With introduction of TCP/IP broad range of technologies available u Fiber optics u Twisted pair u WLAN u GSM/GPRS n Hard- and software vendors n Conclusion: Motorway communication infrastructure as network Hardware Infrastructure

13. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel, Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus, BASt - 13 - n TLS-ISO/OSI Layer 7 n Actual TLS-datagramm description u Bits&bytes u Paperwork, not toolbased u Ambigous u Error-prone interpretation u Weak modelling Data Modelling (1/3)

14. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel, Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus, BASt - 14 - Data Modelling (2/2) n Tool: UML as platform independent modelling language n TLS-datagrams as UML packages and class diagrams n TLS procedures as UML sequence diagrams n UML profiling for various aspects possible u XML profiles u SOA profiles (e.g CORBA, SOAP) u „old TLS“ profile (->backward compatibility)

15. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel, Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus, BASt - 15 - n TCC/SC networks firewalled n IP communication between outstation and TCC/SC n Outstations become part of TCC/SC network n Potential breach of security n Recommendation: Tunneling (ssh/ssl) n Point-to-point communication: Portforwarding n Strong encryption: Verifies data integrity n Public-private-key authentication Security aspects

16. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel, Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus, BASt - 16 - TCC/SC Applications SOAP/ TCP/IP application level gateway TLS-OSI 1-7 Migration Strategy TLS-OSI 1-7 outstation functional groups SOAP/ TCP/IP outstation applications field bus / party line network infastructure

17. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel, Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus, BASt - 17 - n Concept based on TCP/IP n OTS communication hard- and software n Exact data modelling n Backward compatibility: Migration concept allowing for integration of old and new TLS infrastructure n Recommendation: Concept study of a TCP/IP/SOA(P)- based TLS system Consistent TLS-communication concept

18. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel, Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus, BASt - 18 - This working group consists of representatives from: n Road operators (German road administrations) n Sensor and VMS manufacturer n Traffic control centre manufacturer n Engineering and consulting companies Creation of TLS. The further development of the TLS is be done by the AK TLS (Working Group TLS).

19. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel, Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus, BASt - 19 - A modular loose-leaf document system allow the actualisation and release of single chapters without releasing a complete new edition. Updates and corrections should in the future be initiated by any member of the TLS community using a RFP/RFC procedure, moderated by BASt. Updating of TLS.

20. workshop Best practices in monitoring deployment Thursday, 15th and Friday, 16th of March 2007, Hamburg, Germany Future Communication between Outstations and Centres – A Concept for the German Motorways Eike Pögel, Heusch/Boesefeldt GmbH Dr. Lutz Rittershaus, BASt - 20 - Thank you for your attention Dr.-Ing. Lutz Rittershaus Federal Highway Research Institute Telematics, Traffic Management Brüderstraße 53 51427 Bergisch Gladbach Germany rittershaus@bast.de Eike Pögel Heusch/Boesefeldt GmbH Transport Telematics Tempelhofer Straße 4-6 52068 Aachen Germany eike.poegel@heuboe.de