Another attention grabbers during a metro ride are the advertising panels that are strategically placed inside the metro compartment. Infact a research shows that due to an absolute captive audience, these panels have the strongest OTS ( opportunity to see) against over any other OOH advertising option. These large format panels are positioned in such a manner so as to draw maximum attention of the traveller.
Over and above they are one of the most cost effective mediums of metro advertising. eg. communications have a diverse list of satisfied clients who have invested in this medium. eg. communications are the sole concessionaires of Delhi Metro Trains on Line II, III, IV, & V for inside panels.