Measurement of Noise Levels in Pakistani Residential Societies at Source and Receiver Locations

Abstract

Escalating transportation demands have mandated extensive construction of highways in proximity to residential zones, culminating in heightened vehicular noise levels. This investigation centered on the assessment of noise pollution across diverse sites in Lahore, Pakistan, with a specific focus on the Lahore Ring Road (LRR) and surrounding regions. Variables including land utilization, road categorization, arboreal presence, physical impediments, and distances between noise sources and receivers were meticulously analyzed. Utilizing a UNI-T-MS6700 sound level meter, measurements spanning LA99, LA90, LA50, LA10, and LA1 exposed concerning findings, notably recording 80.5 dB from motorcycles in Township (Ali Road) and peaking at 86.5 dB from trucks in Model Town (Ferozepur Road) and Township (Ali Road). While Sui Gas Society demonstrated an 8 dB(A) noise reduction via purposeful tree planting (15 feet), DHA Phase V exhibited a marginal 3 dB(A) decrease due to the absence of such interventions (20 feet). Strikingly, Ashiana-E-Quaid displayed a substantial 19 dB(A) reduction attributed to a considerable distance between noise sources and receivers (300 feet), notwithstanding the absence of trees and barriers. All surveyed locations surpassed the Punjab EPD-prescribed limit of 45-55 dBA, resulting in stress (62.5%) and sleep disruptions (43.3%) among residents. This study underscores the critical roles of tree plantation and source-receiver distance in noise abatement, underscoring the necessity for urban architecture designed with noise barriers to efficaciously manage traffic-related noise.