Mumbai to observe 'No Honking Day' on Monday Hindu - Mumbai (PTI): Mumbaikars should not be surprised if they find the usually chaotic city roads, bustling with vehicular traffic and honking, peaceful on April 7. The city police's traffic department has decided to observe a "No Honking Day" on the ... Honk with care, Big B appeals to city Radio Mirchi 98.3 FM celebrates No Honking Day |