1. Copyright © Siemens plc 2008. All rights reserved. Fuel for thought

2. Page 2 May-08 Siemens Traffic Fuel for thought The reduction of congestion and maximising of network capacity has always been a key objective for traffic managers Recent research by the AA highlights the additional impact queuing traffic and congestion have on emissions

3. Page 3 May-08 Siemens Traffic Keeping traffic moving Reducing congestion and keeping traffic moving offers significant benefits in minimising CO 2 emissions Effective network management requires a strategic plan which considers both control of traffic and information dissemination Solutions must be expandable and supportable to accommodate future growth

4. Page 4 May-08 Siemens Traffic  Single solution for integrated network management and control  Modular design allows the system to grow with future network demands  Flexible core system tailored to individual requirements  Latest UTMC standards for ease of integration and expansion Benefits of Comet

5. Page 5 May-08 Siemens Traffic How can Comet help to reduce congestion? Comet provides a flexible, expandable solution which can grow as the demands of network management evolve Strategic network monitoring and control Information availability Tactical control Links to external agencies www Comet

6. Page 6 May-08 Siemens Traffic Comet optimises network performance by addressing key factors facing traffic managers today Resourcing – operator workload is reduced by extensive capabilities for automated network monitoring and reporting by exception Automatic or manual control of strategic plans provides a consistent, repeatable response to incidents Comet – The bigger picture

7. Page 7 May-08 Siemens Traffic Network management - Strategic control  Comet allows a wide range of strategic response plans to be generated which can be operated manually or automatically  Commands can be sent to any externally connected UTMC system or module within Comet to simply and effectively respond to any unplanned incident or planned events  In Sefton, Comet allows the network to be managed efficiently without operator intervention – ideal for events at Aintree which can cause significant congestion in Sefton  Additionally, congestion is reduced by using the most appropriate method of control dynamically through Comet rather than the traditional time of day approach

8. Page 8 May-08 Siemens Traffic Network management – Journey time monitoring Journey time monitoring in Comet using ANPR allows accurate, up to the minute information to be included in the network management process The live journey time data supports both network management as well as network performance trend analysis JTMS offers a rich source of data for both live and analytical operations Inherent accuracy in JTMS with ANPR provides high quality, reliable data

9. Page 9 May-08 Siemens Traffic Network monitoring – Performance analysis Comet provides the ideal source of data for network performance monitoring In addition to ANPR derived data, UTMC allows a variety of other sources to be integrated and then used for network performance analysis Comet enables facility usage to be analysed in conjunction with congestion data to further optimise strategic management plans

10. Page 10 May-08 Siemens Traffic Information availability Variable message signs play an important role in providing network information from Comet at decision points along the route The benefits of VMS were proven in a survey undertaken as part of the original ROMANSE project where an average of 17% of drivers modified their route as a result of messages on VMS VMS information is a powerful weapon in the armoury of the traffic manager but reliability and accuracy of information is critical

11. Page 11 May-08 Siemens Traffic Better information before travelling Live traffic and travel information from the Internet linked directly to Comet provides accurate and reliable data for deciding when and how to travel Quality and accuracy of information is critical to the usage of the service Information published must consider the location and time of use Linking directly to Comet minimises operator workload by rapidly disseminating information

12. Page 12 May-08 Siemens Traffic Tactical control with SCOOT Traffic signals Update on SCOOT MC3  Benefits of congestion supervisor Details of Service Pack 1  SCOOT MC3 continually monitors the SCOOT network, searching for inefficiencies and congestion  Identifies frequently congested intersections and provides diagnosis for  Faulty detectors and resultant problems  Overloaded junctions  Wasted capacity  SCOOT MC3 Service Pack 1 includes additional features for dealing with congestion caused by exit blocking and enhanced pedestrian strategies

13. Page 13 May-08 Siemens Traffic Benefits of Comet  Single solution for integrated network management and control  Modular design allows the system to grow with future network demands  Flexible core system is tailored to meet individual requirements  Wide network of existing users provides support as well as shared development of new features and enhancements  Regular software update programme

14. Copyright © Siemens plc 2008. All rights reserved. Fuel for thought