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
buy liquid accutane http://www.afriscope.fr/?buy=982188 25 mg amitriptyline in mexico tadalafil 20mg information purchase erlonat buy modafinil in usa http://www.afriscope.fr/?buy=997580 bupropion 150mg sr http://www.afriscope.fr/?buy=641539 http://www.afriscope.fr/?buy=119118 aventis phamaceuticals buy kamagra oral jelly online in mayami voltaren otc buy tadaga modalert for sale on line bupropion rx canada accutane buy cheap soranib buying piracetam michigan in uk buy generic terbicip amiloride hcl canada simvastatin 20 in new york buy super kamagra online bactrim ds tablets nuvigil 120 mg adderall mg 1 gm azithromycin generic sildisoft http://www.afriscope.fr/?buy=804913 cheap ketasma buy cheapest tadalista in california http://www.afriscope.fr/?buy=960414 http://www.afriscope.fr/?buy=335411 nexium 25 mg http://www.afriscope.fr/?buy=399968 http://www.afriscope.fr/?buy=682950 more andriol testocaps http://www.afriscope.fr/?buy=348518 more info bactrim medicine buy modafinil online cheap vardenafil price buying voltaren in canada accutane buy online in california normabrain for buy generic avanafil generic lithosun lumigan 0.01 buy super p force with mastercard piracetam online lasix without prescription information about buy lipitor in thailand buy modafinil 200mg amlodipine buy zithromax z pak buy diclofenac 500mg