Elaborate security and other arrangements have been made for the Beating the Retreat ceremony in the Capital later on Saturday. It denotes the culmination of Republic Day celebrations. Twenty bands from Army, Navy and Air Force will play various military tunes at the ceremony which will be held at Vijay Chowk. President Pratibha Patil will be the chief guest at the function. Traffic will not be allowed on Rafi Marg between round-abouts of Sunehri Masjid and Krishi Bhawan, Raisina Road from Krishi Bhawan round-abouttowards Vijay Chowk, beyond round-abouts of Dalhousie Road, Krishna Menon Marg and Sunehri Masjid towards Vijay Chowk and on Rajpath between Vijay Chowk and C- Hexagon of India Gates. DTC and other city buses will be diverted from their normal routes from 4 pm hours to 9:30 pm to facilitate the vehicles of invitees and spectators and to avoid traffic congestion on roads around the venue of the function.