On a single line section with bi-directional movement, one train is made to stop at a station to give way or crossing of another train. In this photo, Mumbai bound Mandovi express is making its scheduled halt at a small station named Sindhudurg while Mumbai-Madgaon superfast Janashatabdi express is crossing with high speed. Station staff can be seen on both sides, exchanging green flags with the train crew to convey "all clear" message.