Research Article

A Case Study on Annoyance Noise Caused by Metro Railway at a TOD Developed Depot

Table 1

The summary of effects and threshold levels on healthy for .

EffectDetailed effectsThreshold, dB (A)

Biological effectsEEG awakening35
Motility, onset of motility32
Changes in duration of various stages of sleep, in sleep structure and fragmentation of sleep35

Sleep qualityWaking up in the night and/or too early in the morning42