Southern Railway — noise and speed pollution

Address:

Chennai, Tamil Nadu, 600033

We are residing near mambalam railway station
The heavy horn noise of various express trains causing lot of problems including noise pollution, restlessness, disturbing the sleep of old aged and children
This noise is audible for a long distance
Horn is meant for alerting the passingers to keep away from moving train
Why don't we reduce the volume

Similarly the speed of express trains shaking the buildings of nearby area. If the trains are operated at a limited speed till chennai tambaram, this can be resolved