Resources

2016 – April – Burns – Movement Authorities – A Systems Framework

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Date presented: March 30th, 2016

Peter Burns MBA, BAppSci (Elect), MIRSE, CPEng, MIEAust PYB Consulting This paper on Movement Authorities is one of a series on the various elements of the Generic Systems Framework (see figure 1). The issuing of Movement Authorities is distinguished from the setting of a route and the general pre-conditions for the issuing of a Movement Authority stated. Movement Authorities are shown to be found in all safeworking systems and having characteristics which are common to all of them. The process for issuing a Movement Authority may be characterised as the formation of a contract between the train and the interlocking. Looking at fixed signal systems, the signal is found to fill three distinct functions, one of which is the communicating of movement authorities. Turning to ERTMS and CBTC systems, it is shown that their central functionality is of a nature that does not require treatment as a movement authority. Benefits can be obtained by recognising the different natures of the three distinctfunctions which are replaced when ERTMS and CBTC systems requirements around those distinct functions appropriately.

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2016 – April – Aitken – What they didn’t tell you at University – or did they?

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Date presented: March 30th, 2016

John Aitken BE SMIEEE MIRSE Aitken & Partners   Simplifying assumptions are a key to understanding many problems and can be very helpful. Thin, inextensible strings and ideal capacitors make for simple analysis but neither is available for purchase, so their practical usefulness is limited.Sometimes, simplifying assumptions conceal an underlying problem or distort our understanding. This tutorial paper discusses some situations where assumptions may lead to undesirable outcomes and provides some gentle reminders to exercise caution and be thorough in design, implementation and testing.

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2016 – April – Atchison and Bruce – Implementation of ETCS on Adelaide Metro Network

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Date presented: March 30th, 2016

Brenton Atchison PhD, BSc, RENGMichael Bruce BSc Eng, MIRSE Siemens Ltd. Mobility Division, Australia   This paper describes the experience of implementing the European Train Control System (ETCS) Level One on the Adelaide Metropolitan Passenger Rail Network (AMPRN). The ETCS implementation was part of the broader signalling and communications contract associated with network rail electrification program.   The project commenced in October 2012 and an independently assessed safety case for ETCS was completed September 2015 with first passenger service in November 2016. It is the first operational ETCS system deployed in Australia.   This paper discusses the challenges associated with ETCS trackside engineering and implementation. It describes the key choices in operating principles, contrasts trackside application for the re-signalled and overlay lines, describes rolling stock installation considerations, and system integration methodology.

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2016 – April – Lambla – Driver Advisory System Integration Steps

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Date presented: March 30th, 2016

Bruno Lambla Product Manager, TTG Transportation Technology, Australia This paper first focuses on DAS technology insertion into the reality of the legacy of complex railway assets and provides one of TTG’s return on experience on DAS deployment. In a second stage, we focus on steps for integration of DAS with other railway signalling systems. Integration is inevitable and will add value and capability to the DAS offer. Dynamic optimisation of standalone DAS can deliver energy savings of around 5 to 18% to train operating companies. Integration with traffic management systems (Connected DAS) will allow DAS to dynamically take into account other trains’ trajectory. This will allow to optimise the network capacity. DAS remains a SIL 0 (SIL 1 in the case of C-DAS) system but can operate with Safety Systems such as ETCS. Integration with ETCS will require ETCS display to be modified so that the DAS graphical interface can be represented on the ETCS screen. This integration to a single visual display will ensure the driver can’t get any conflicting advice between DAS and ETCS. The conflicts will be managed through ETCS accepting or ignoring advice coming from DAS.Integration has started and will continue so that information can be shared improving situation awareness. The value of the DAS advice will be increased. This integration will be made possible by deployment of traffic management systems, new telecommunications allowing constant and secure information flow, ETCS implementation.

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2016 – April – Gray and Alexander – V2X: Vehicle to Everything (Including Rail)

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Date presented: March 30th, 2016

Paul Gray B.Eng., M.Eng., Ph.D. Cohda WirelessPaul Alexander B.Eng., M.Eng., PhD. Cohda Wireless   In 2010 Cohda Wireless conducted a feasibility study for the use of Dedicated Short Range Communications (DSRC) for improving rail level crossing safety. DSRC is the globally coordinated standard for Cooperative Intelligent Transportation Systems (ITS). It combines GPS and wireless communication in dedicated spectrum at 5.9GHz. Safety-of-life applications, such as cooperative collision avoidance are the key feature of DSRC, and the 5.9GHz spectrum includes a communications channel dedicated to cooperative safety applications. Vehicles use DSRC to share information by continually broadcasting their location, speed, direction, vehicle type and size, and additional status information. The DSRC system also includes a processor that uses local position information, and information received from other vehicles, to accurately detect potential collisions and activate driver warnings. DSRC Roadside Equipment (RSE) allows communications between vehicles and infrastructure, such as railway warning systems.

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1985 – March – Evans – Introduction to Technical Papers on Axle Counters

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Date presented: March 16th, 2016

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1986 – Aug – Nobbs – Intermittent Automatic Train Control Associated

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Date presented: March 16th, 2016

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1985 – March – Ellis – The Axle Counter Connection 1984 Other Issues

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Date presented: March 16th, 2016

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1985 – March – Pyle – Use of Axle Counters for Proving Block Sections on

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Date presented: March 16th, 2016

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1986 – Aug – Standard Radio Telefon AB – Automatic Train Control Equi

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Date presented: March 16th, 2016

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