If you stay or have stayed in Delhi then you must have traveled by the metro. You must have spent time at the stations while you waited for the train to arrive. During that time, the ad displays at the station must have caught your eye. Now, imagine how drab would the stations become without those hoardings and ad panels. Delhi Metro Advertising Agencies in India have done a wonderful job of bringing alive the metro stations with a myriad colors in completing their primary tasks of promoting the business of their clients.