Shatabdi Express are a series of fast passenger trains operated by Indian Railways. Shatabdi Express are day trains and mostly return to their origin station the same day. The trains were first introduced in 1988 and were named 'Shatabdi', meaning 'century', to commemorate the birth centenary of India's first Prime Minister Jawaharlal Nehru. The trains run at a maximum permissible speed of 110–150 km/h (68–93 mph) with the Rani Kamalapati–New Delhi Shatabdi Express achieving the maximum permissible speed of 150 km/h (93 mph) between Tughlakabad and Bilochpura Agra.