tender for award of comprehensive annual maintenance of traffic light signals/blinkers in nct of delhi , part-a ( maintenance rates of signals/blinkers-southern range and new delhi range ) , signals without pedestrian , signals with pedestrian , timer , pedestrian signals , auditory devices , signals with pelican facility , blinkers , inverters at traffic junctions , total leds approximately , part-b ( maintenance rates of signals/blinkers-eastern range and central range ) , signals without pedestrian , signals with pedestrian , timer , pedestrian signals , auditory devices , signals with pelican facility , blinkers , inverters at traffic junctions , total leds approximately , part-c ( maintenance rates of signals/blinkers-southern range and new delhi range ) , signals without pedestrian , signals with pedestrian , timer , pedestrian signals , auditory devices , signals with pelican facility , blinkers , inverters at traffic junctions , total leds approximately