Advertisements have become today’s most direct marketing channel that provide information and discount offers about products to customers and allow marketers to reach a precise goal by creating campaigns. Making these Ads locationspecific would not only render them more relevant but also personalized and targeted to specific audience. This paper presents a brief survey on Location-based Advertisements (LBA) with emphasis on their applications in Public Transportation Systems (Buses, Trains, Airplanes, etc.). Furthermore, this paper also proposes the design and implementation of a low-cost embedded system using Global Positioning System (GPS) which displays these Ads on real-time passenger information display system inside the vehicle. The objective of this review is to summarize and compare some of the well-known extensive research done in the field of LBA in order to make the existing technology even better.