There are two trains in our network that have these grills under the seats of the saloon car. Any guesses what is behind them?
Answer: They are part of the track imaging system, RailVision, which SMRT uses to monitor the condition of the entire North-South East-West line rail network.
RailVision uses four special cameras to capture high quality images of the railway. The equipment is installed on two Siemens trains and images can be captured while the train is carrying passengers. The highly detailed black and white images are scanned by a special software which flags possible defects.
The RailVision team will then verify each of these flagged images. The software is able to detect missing fasteners, wheelburns and other rail related defects. This information is then shared with the field team who will then make the final on ground verification of the fault and the required maintenance work is carried out.
The RailVision system is capable of capturing the entire North-South East-West Line in a matter of hours. With over 128km of track to maintain, the images helps the field team to home in on known faults, increasing their efficiency during the limited night maintenance hours where it is difficult to see in the dark.