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21 - TTC - Transportation and Traffic Control

TTC-ON 145 - Modern Rolling Stock for Reducing Noise

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Course Description

While railway transport is considered the most sustainable transport mode with its low energy consumption and CO2 emissions, noise pollution has always been a main environmental challenge. Environmental noise is almost everywhere around us. This may affect the quality of our life. However, recently, the introduction of modern rolling stock will lower noise most significantly. This course lists measures, funding and regulations to reduce noise. It focuses on the technology that will effectively reduce rolling noise while still increasing the railway transport output. 

Course Objectives

  • Addressing noise and vibration issues for new lines or for modification of existing lines
  • Differentiating numerical and experimental methodologies
  • Providing details analysis on environmental railway noise 
  • Measuring outside and/or inside noise emitted by stationary or rail vehicles
  • Demonstrating how current rolling stock fleets compare against current, recent past, and projected new rolling stock.  

Who Should Attend?

  • Railway Engineers 
  • Construction Engineers 

Course Details/Schedule

Day 1

  • Definitions and effects of noise 
  • Noise and railway noise 
  • Measurement of noise 
  • Effects of noise 
  • Results of noise mapping 
  • Environmental groups and affected inhabitants

Day 2

  • Legal framework 
  • TSI Noise Regulations
  • EN ISO 3095:2013
  • EN ISO 3381:2011
  • Acoustics, Railway applications, Measurement of noise emitted by railbound vehicles
  • Measuring and computing of railway noise 
  • Speed and roughness dependence
  • Vehicle interior noise
  • Bridge noise

Day 3

  • Rail noise – sources and prevention measures 
  • Sources of railway noise 
  • Noise emissions in relation to rolling stock 
  • Measures to avoid railway noise 
  • Result for main reduction measures 
  • Number of rail freight wagons to be retrofitted 
  • Maintenance and its effects to noise
  • Rail grinding
  • Building of noise barriers

Day 4

  • Current modelling methods 
  • Airborne noise 
  • Contributing sources and modelling 
  • Transmission path 
  • Transmission loss
  • Interior absorption 
  • Interior sound distribution 
  • Strengths and weaknesses
  • Advantages of noise  

Day 5

  • Structure-borne noise
  • Contributing sources and modelling
  • Vibration isolation 
  • Case Studies 
  • Investigation of source of noise, surveying with residents and railway workers,
  • Measuremet of noise and evaluation of test results with the limits which are specified in norms, regulations, standards etc.,
  • Implementation of noise mitigation techniques and comparison of new test results with the former results etc