Mobile Railway Noise Monitoring Systems

Train passby noise can vary significantly depending on several factors, including train type (freight or passenger), speed, direction, track gradient (uphill, downhill, or flat), curve radius, track condition, and even weather. To accurately assess noise levels at a specific location, long-term monitoring—typically over 2 to 4 weeks—is essential to capture a representative sample of train events.

Renzo Tonin & Associates (RTA) has been at the forefront of noise monitoring innovation since 1990, developing seven generations of the RTA Noise Logger. Some of our purpose-built systems are designed specifically for railway noise measurement and analysis. They feature advanced detection algorithms that identify individual train events and quantify associated noise levels and other key parameters, including train speed, direction, track usage, and problematic sound characteristics such as squeal or flanging.

These measurements are post-processed to support a wide range of applications, including:

• Compliance with State and Territory rail noise guidelines:

  • NSW Rail Infrastructure Noise Guideline (EPA 2013)

  • NSW Development Near Rail Corridors and Busy Roads (DoP 2008)

  • Queensland Operational Railway Noise and Vibration (Interim) (DTMR 2019)

  • Victoria Passenger Rail Infrastructure Noise Policy (VIC Government 2013)

  • Others as applicable

• Meeting project-specific Conditions of Approval

• Identifying high-noise locomotives or wagons

• Investigating noise complaints

• Evaluating noise mitigation measures (e.g. barriers, lubrication systems, friction modifiers, rail dampers)

• Conducting periodic monitoring (e.g. six-monthly or annually) to assess the long-term impact of maintenance programs

RTA’s systems use Class 1 sound level meters compliant with IEC 61672-1:2013, ISO 3095:2025, and AS2377:2002 standards. Our setups are tailored to project needs and may include time-lapse imagery or video to identify train types and IDs, along with audio recordings to undertake further detailed analysis, or exclude non-rail noise sources such as road traffic.

Our experienced acoustic consultants are skilled in installing and operating monitoring equipment both within rail corridors and at sensitive receiver locations.

If you're interested in long-term rail noise monitoring for your next project, we’d be happy to discuss how we can support you.