Tracks - Articles and news items
For European Railway Review, David Packer, CEO of the Permanent Way Institution, writes that key rail routes are approaching capacity and has prompted the Digital Railway project, which will add capacity by modernising train and track systems.
Rail industry news / 19 April 2017 /
The railway between London and Scotland has reopened after a number of upgrade projects by over Easter were completed on time.
Rail industry news / 1 February 2017 /
The Prime Ministers of Latvia, Lithuania and Estonia have signed an intergovernmental agreement on the implementation of the Rail Baltica project.
Rail industry news / 31 January 2017 /
Network Rail will be carrying out £3.6m upgrade work on the East Coast Main Line in Bedfordshire in order to improve reliability of the line.
Rail industry news / 30 January 2017 /
Nexus has announced a £35 million modernisation programme for the Tyne and Wear Metro to be carried out in 2017
Rail industry news / 16 January 2017 /
Network Rail has announced that it will be carrying out vital improvement works on the East Coast Main Line in North Yorkshire.
Issue 6 2016 / 23 November 2016 /
For Swiss Federal Railways (SBB), swissTAMP is a key component in building a proactive asset management system vital for the efficient and effective planning of systematic track maintenance.
Rail industry news / 7 September 2016 /
Britpave, the transport infrastructure association, has published a new report which calls for the examination of whole life cost benefits to be a perquisite for rail track investment and highlights the benefits of the concrete slab track
Rail industry news / 1 September 2016 /
The Mayor of London has marked 75 percent completion of Crossrail whilst on-board the first Elizabeth line station-to-station journey from Custom House to Canary Wharf.
Rail industry news / 21 June 2016 /
Loughborough University have issued an invitation to tender for the development of failsafe railway track switch.
Rail industry news / 30 June 2015 /
An £8.5 million research programme known as Track to the Future (T2F) has launched this month aiming to develop railway tracks for the future.
Issue 4 2013 / 1 August 2013 /
The liberalisation of European railways, particularly the free network access of passenger and freight traffic, have a basic influence on the construction of new lines and the maintenance and upgrading of tracks of ÖBBInfrastruktur AG. This article outlines the essential characteristics of track systems including track substructure.
Line layout and cross sections
Operating trains on a line that allows high speeds for passenger trains and low speeds for freight trains requires careful consideration about track alignment design. The maximum allowable values of cant deficiency (Imax = 130mm) and a max. cant excess (Emax = 110mm) enables expectable rail wear and reduced maintenance costs. A maximum gradient of 12.5‰ guarantees a load of 1,000 tonnes per freight train. A minimum radius of 3,000m enables a comfortable train speed of 200km/h, but 250km/h for trains with low axle loads is also possible.
The invention of the ‘Viennese Curve’ – a transition curve calculated for the centre of gravity of a vehicle – reduces lateral track forces and rail wear. In addition, this transition curve guarantees a full compensation of the rate of change of the lateral acceleration at the points of discontinuity – as a result, new and better passenger comfort will occur.
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