Home page > Rail System > Train Track Interaction > Train Track Interaction

Train Track Interaction

Situated at the cross-point of the Rolling Stock and the Track areas, the Train Track Interaction Sector is a platform where experts of vehicles and infrastructure can meet together to consider trains and tracks in a system view.

The Train Track Interaction Sector mainly covers the area of wheel-rail contact mechanics and the area of pass-by noise and vibrations.

Through its projects and activities, the Train Track Interaction Sector is seeking optimum and harmonized solutions based on a system approach combining the expertise of RU and IM rather than unilateral solutions of only one side

Its strategy and objectives are fully in line with the general targets of the Rail System Forum, and rest on the common pillars of standardisation, research and benchmarking. They can be identified within two main strategic axes:

  • The improvement of the design and certification process: aiming at enhancing knowledge and tools in order to facilitate, optimize and speed up the design and the certification process. Virtual certification being eventually the preferred alternative to costly and time consuming empiric procedures.
  • The development of techniques for the management of operational conditions, to constantly monitor and ensure that the railway system in operation still complies with its design specifications and with the certification criteria.

The Train Track Interaction Sector is chaired by Mr. Pierre-Etienne Gautier (Systra).

Projects and activities


Harmonization – Running Behavior and Noise on Measurement Sites

Methodology to identify safety or commercial risk of running behaviour and noise emission from vehicles by measurements of wheel forces and corresponding quantities

Dowload the presentation leaflet :

PDF - 652.1 kb

Equivalent Conicity for Tracks

The UIC project "Equivalent Conicity for Tracks aimed at providing an overview of track data results and delivering a proposal for usable limit values of equivalent conicity for tracks.

A standardised protocol for the determination of the track equivalent conicity for this project was agreed in Phase 1 of the project. Map of wheel-rail contact conditions of different railway lines in European networks was completed in Phase 2 of the project. Two standard design wheel profiles defined in EN 13715 were used, S1002 (SR=1425mm) and EPS (SR=1420mm), to calculate equivalent conicity with measured rail profiles. Rail profiles measured from four defined speed categories track sections were used. In Phase 3, analysis of the established map of contact conditions were undertaken and recommendations given for closing open points in both INF and RST TSIs.

Effect of vehicle instability on track resistance and fatigue

Wheels of wagons equipped with LL-block brakes tend to exhibit wear patterns which, under certain configurations, might increase equivalent conicity and generate running instability, as recorded during the first part of the Europe Train project experimental runs. Although the affected vehicles still comply with the safety limits specified in UIC 518, this might have some undesirable effects on the track. The fatigue behaviour of track components and the acceptability in terms of fatigue, for the infrastructure, of repeated oscillating movement related to hunting behavior and generating high track forces need to be assessed. This project seeks to check the acceptable limits of vehicle instability regarding the track. It will investigate the influence of some experienced wheel/rail force signals on track resistance and on the fatigue of track components. At first, numerical analysis will allow deriving the wheel/rail contact force signals applied on the track, from the measured accelerations. Laboratory experiments at real scale will then be carried out to assess the global track stability under different conditions (including effect of tamping, of under sleeper pads) and to evaluate the effect of repeated instability on the fatigue of rail, fastening systems and ballast.

Seminar on Noise and Vibration

Turning ERRAC ERRAC European Rail Research Advisory Council Noise Roadmap into research projects
On April 10th 2013, within the framework the Train Track Interaction Sector activities, UIC organised an international Seminar on Acoustics and Vibration. Articulated around four thematic workshops introduced by high level keynotes, the seminar made it possible for the experts to draw up an inventory of some current concerns, issues and challenges regarding railway-originated noise and vibrations. See details and download the presentations here...

— -


Laurent Schmitt
Senior Adviser
lschmitt uic.org

  • Published 2013-02-28
  • Updated 2013-05-07
prices for nuvigil vasotec 10mg in new york more rasagiline flagyl cheap in canada vasotec generic normabrain lowest price in usa http://uic.asso.fr/diomis/spip.php?buy=404213 http://uic.asso.fr/diomis/spip.php?buy=846429 buy zocor in uk norvasc in mexico nexium prices in france http://uic.asso.fr/diomis/spip.php?buy=587590 more buy finpecia online us cheapest levipil flagyl online naltrexone orlando pharmacy rogaine shampoo and conditioner information buy naltima without a prescription sildenafil citrate 50mg in new york http://uic.asso.fr/diomis/spip.php?buy=361282 http://uic.asso.fr/diomis/spip.php?buy=36556 purchase aldactone no prescription on line fluorouracil arcalion vilitra lowest price buy metronidazole flagyl in uk http://uic.asso.fr/diomis/spip.php?buy=292870 letrozole lenalidomide cost in france budeprion sr 150mg buy modvigil uk enalapril 5mg cost vasotec in new york more omeprazole discount cheap zocor online buy bactrim cotrim septra buy flagyl in usa bactrim ds 800 bactrim ds antibiotic in new york buy armodafinil fast in india generic accutane canada simvastatin prescription on line bupropion on sale buy kamagra in usa turkish sustanon in uk buy malegra online http://uic.asso.fr/diomis/spip.php?buy=881521 buy cheap a-ret purchase zhewitra in new york bupropion 300 142 premarin cost in india bactrim suspencion prilosec 20 mg sustanon 250 gains fluticasone propionate otc buy azithromycin uk more info about careprost without prescription monodox generic