Non-Markovian performability evaluation of ERTMS/ETCS level 3

• The European Rail Traffic Management System/European Train Control System (ERTMS/ETCS) is an innovative standard introduced to enhance reliability, safety, performance, and interoperability of trans-European railways. In Level 3, the standard replaces fixed-block safety mechanisms, in which only one train at a time is allowed to be in each railway block, with moving blocks: a train proceeds as long as it receives radio messages ensuring that the track ahead is clear of other trains. This mechanism increases line capacity, but relies crucially on the communication link: if messages are lost, the train must stop within a safe deadline even if the track ahead is clear. We develop upon results of the literature to propose an approach for the evaluation of transient availability of the communication channel and probability of train stops due to lost messages. We formulate a non-Markovian model of communication availability and system operation, and leverage solution techniques of the ORIS Tool to provide experimental results in the presence of multiple concurrent activities with non-exponential durations. © Springer International Publishing Switzerland 2015.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik -- Inbäddad systemteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering -- Embedded Systems (hsv//eng)

Keyword

European Rail Traffic Management System (ERTMS)

European Train Control System (ETCS)

Markov Regenerative Process (MRP)

Real-time systems design

Stochastic state classes

Transient analysis

Automatic train control

Control systems

Interactive computer systems

Interoperability

Markov processes

Railroad traffic control

Railroad transportation

Railroads

Safety engineering

Stochastic systems

Concurrent activities

European rail traffic management systems

European Train Control Systems

Markov regenerative process

Non-Markovian modeling

Performability evaluation

Train control systems

Real time systems

Software Technology

Programvaruteknik

Publication and Content Type

ref (subject category)

kon (subject category)