Transportation Noise Assessment — Road, Rail & Airport Infrastructure Projects

Transportation infrastructure is the primary source of environmental noise exposure for most urban and peri-urban populations in Asia and the Middle East. SoundPLAN is the industry-standard software for noise assessments supporting road, railway, and airport infrastructure planning — from project feasibility and EIA through to detailed design, barrier optimization, and post-construction monitoring baseline setting.

Transportation noise assessments using SoundPLAN are accepted by environmental agencies, transport authorities, development banks, and environmental regulators across the region. Our clients use SoundPLAN for national highway projects, metro and BRT lines, airport noise contour studies, and logistics infrastructure in Thailand, Malaysia, Singapore, Indonesia, Vietnam, India, Saudi Arabia, UAE, and beyond.

Road Traffic Noise Assessment

• Calculation standards — RLS-19, RLS-90 (Germany), NMPB/XP S 31-133 (France), CRTN/CoRTN (UK/Singapore/Malaysia), CNOSSOS-EU, TNM (USA), Nordic, and regional methods
• Traffic data integration — Input traffic volumes, speed, composition (PCU/HGV ratios), and growth forecasts
• Facade level mapping — Calculate noise levels at every building facade for EIA and planning condition compliance
• Barrier optimization — Automatically find the minimum barrier height and length needed to achieve noise limit compliance, minimising cost

Railway Noise Assessment

• Calculation standards — Schall 03 (Germany, widely used in Asia), RMR (Netherlands), Nordic Rail, CNOSSOS-EU railway
• Train types — Metro, light rail, commuter rail, freight, and high-speed trains
• Vibration screening — Ground-borne vibration and structure-borne noise screening
• Route comparison — Compare alignment alternatives by community noise impact

Airport Noise Assessment

• Calculation standards — ECAC Doc.29 (European/international), FAA INM (USA/international)
• Aircraft fleet modeling — Define aircraft fleet mix, flight paths, departure/arrival procedures, and traffic levels
• Noise contour maps — LAEQ, Lden, Lnight, and composite noise index (CNI) contours for airport land use planning
• Population exposure — Count people within each noise contour zone

Transportation Noise in Asia and the Middle East

The scale and pace of transportation infrastructure development in Asia and the Middle East is exceptional. Major highway, metro, and airport projects are underway simultaneously across the region — each requiring rigorous noise assessment. SoundPLAN Asia has supported transportation noise assessments across Thailand, Malaysia, Singapore, Indonesia, India, Saudi Arabia, UAE, and other markets, providing both software and project expertise to ensure assessments meet the requirements of local environmental agencies, international development bank safeguard frameworks, and project-specific EIA conditions.

Noise During Construction vs Operation

Transportation noise assessments typically cover two distinct phases: construction noise (from earthworks, piling, structure erection, and material delivery) and operational noise (from traffic, trains, or aircraft once the infrastructure is in use). SoundPLAN handles both phases within the same project framework. Construction and operational assessments can be maintained in parallel, with results compared to demonstrate that operational noise levels are within approved limits before commissioning. For construction noise, see our construction noise assessment page.

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