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.
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.
Carmelo Sipala is a curious and tireless Electronic Engineer. He was born in Catania (Italy) on 8th January 1987. He's worked at Segula Technologies as Consultant for Bombardier. He's a Signalling Test Engineer with specific expertise on Object Controllers and interfaces to Interlocking Systems. Since March 2015, Carmelo collaborates with railwaysignalling.eu, where's also known as "CarmelOne".
That's the end of the Italian Excellence for railway signalling applications. Which will be the consequences for the market? What do the current (and potential future) Ansaldo employees need to expect? How stronger will Hitachi become? All of this will come soon.
Since the SafeRail project set out in 2013 to assess the feasibility of using satellite technology to improve safety at level crossings, the debate over the dangers posed by locations where rail meets the road has only grown. Many countries are working to phase them out, but the cost of replacing them with new infrastructure is often too high to consider except in the most serious cases.
Since the train control systems are critical systems, they must be certified according to strict guidelines, such as CENELEC regulations. These rules govern both the development process and the characteristics of the final product.