Railway maintenance is defined as the process of preserving a working condition of a railway equipment, along the track or related to rolling stocks, but there are actually different approach to mantain a railway asset or service..
With CBTC, moving blocks introduce to the concept of contiguous track, because the railway is represented as a single contiguous block, rather than a set of adjacent blocks. This means that the safe separation behind the preceding train is dynamically calculated based on the maximum operating speeds, braking curves and locations of the trains on the alignment. Also, in this way the capacity of the railway is extremely increased.
In railway signalling, capacity can be defined as the maximum number of trains that can pass a given location during a given time period at a specified level of reliability.
Strict safety requirements regulate the development of railway signalling and train control systems, covered by the CENELEC (European Committee for Electro-technical Standardization) EN 5012x rail standards
This paper will drive you across the different phases of the V-cycle for railway application, by explaining the key role of requirements during each phase and presenting the Systems Engineering activities required to support and control product development.
Track circuits contributes for train detection but also for the vehicle’s speed control, since the electrical signals used for train detection can be exchanged between wayside and on-board for the transmission of speed commands.
Since the train can be considered the transport mode of the future, national railway companies and European Union are currently working for a continuos upgrade of sustainable rail transportation, in order to guarantee the best quality of life to European citizens.
Railway signalling can be defined as all systems used to control railway traffic safely, essentially to prevent trains from colliding. Over the years knoledgment and technology able to satisfy this issue have been implemented. ERTMS/ETCS is currently the most common signalling system adopted in Europe.
Is it possible a CBTC standardization in accordance with ERTMS/ETCS ? Provisions have been made to plan for the migration from CBTC systems, to ETCS Level 3
In railway signalling, an interlocking (IXL) is a system composed by a set of signal apparatus that prevents trains from conflicting movements through only allowing trains to receive authority to proceed, when routes have been set, lock and detected in safe combinations.
The new London-Paris super train represents an increase in capacity for Eurostar’s fleet of 20 per cent, while it will is reportedly estimated to cut journey times from London to Paris by 15 minutes.
Around the world, public transport systems are ageing, underdeveloped or simply unable to cope with the demand of a growing mobile population. Limited funds and resources are an obvious constraint to transport development.
The ETCS Limited Supervision mode has been recently defined as a fully standardized ETCS operation mode, to be interfaced with a national signalling system. It provides a flexible and scalable version of ETCS. It will be commissioned in Switzerland by Siemens within 2018, substituting the EuroZUB/EuroSignum National Signalling system.
Alstom is expected to make a statement about the two offers by GE (10 Billion Euro) and Siemens (part of its train business plus cash) early on this week.
After the acquisition of "Invensys rail", Siemens increases its turnover through the rail market. The sector "Infrastructure & Cities", which now includes the division...