SIST EN 1793-3:2026

Overview

SIST EN 1793-3:2026 is a European standard that details the methodology for determining the acoustic performance of road traffic noise reducing devices through a normalized traffic noise spectrum. Developed by the Slovenian Institute for Standardization (SIST) in collaboration with CEN, this standard provides a unified approach for evaluating how effectively noise barriers and similar acoustic devices reduce road traffic noise. The standard is essential for manufacturers, authorities, and acoustic consultants involved in the design, installation, and testing of noise mitigation solutions along roadways.

Key Topics

• Normalized Traffic Noise Spectrum
  The standard defines a reference spectrum-referred to as the normalized traffic noise spectrum-to assess the performance of devices. This allows consistent and comparable measurement of single-number acoustic ratings across different products and installations.

• Scope and Definitions
  SIST EN 1793-3:2026 focuses on the acoustic performance of various road traffic noise reducing devices (RTNRDs) such as:

  • Noise barriers
  • Claddings attached to structures
  • Road covers or overhangs
  • Added acoustic elements acting on diffracted sound

• Device Components
  It recognizes that devices may consist of:

  • Acoustic elements (providing noise reduction)
  • Structural components (supporting the device)
  • Combined self-supporting elements

• Frequency-Dependent Performance
  The performance is specified using a spectrum that describes sound pressure levels in different frequency bands, recognizing that noise reducing devices perform differently across frequencies typically encountered in road traffic environments.

Applications

SIST EN 1793-3:2026 is widely used in the following scenarios:

• Product Testing and Certification
  Manufacturers of noise barriers and related products use this standard to certify their devices' acoustic performance against a recognized benchmark. This ensures that products meet regulatory and project requirements for noise reduction efficiency.

• Infrastructure Planning and Compliance
  Authorities and planners reference this standard when specifying noise mitigation requirements for new or upgraded road infrastructure. This ensures compliance with European regulations and provides clarity in procurement and installation.

• Acoustic Performance Assessment
  Acoustic consultants rely on the normalized traffic noise spectrum to conduct reliable, harmonized measurements and analyses. This is vital for comparing various products and optimizing the design for specific roadside environments.

• Maintenance and Upgrading
  The standard assists in the ongoing evaluation of existing noise reducing installations, supporting data-driven decisions in maintenance, upgrades, or replacement based on measurable acoustic performance tied to actual traffic noise spectra.

Related Standards

SIST EN 1793-3:2026 is part of the broader EN 1793 series, which collectively provide test methods and rating systems for road traffic noise reducing devices. Key related parts include:

• SIST EN 1793-1: Intrinsic characteristics - Sound absorption under diffuse sound field conditions
• SIST EN 1793-2: Intrinsic characteristics - Airborne sound insulation under diffuse sound field conditions
• SIST EN 1793-4: Intrinsic characteristics - Intrinsic sound diffraction
• SIST EN 1793-5: Sound absorption under direct sound field conditions
• SIST EN 1793-6: Airborne sound insulation under direct sound field conditions

For further technical details and up-to-date information, stakeholders are encouraged to consult the full suite of EN 1793 standards or contact their national standardization body.

By applying SIST EN 1793-3:2026, stakeholders ensure that road traffic noise reducing devices are assessed consistently, supporting safer and quieter road environments throughout Europe. The standard is fundamental for anyone involved in noise management, infrastructure projects, and environmental acoustics.