(a) the number of Road Over Bridges (ROBs) sanctioned in the country during the last three years;
(b) the total number of ROBs where works are in progress under the Southern Railway;
(c) whether the progress of work on ROB at Alhani in Trissur under Southern Railway is very slow;
(d) if so,the reasons therefor; and
(e) the steps taken to expedite the work on this project?