There are many bus advertising formats, they vary in price depending on many factors, the routes, the size, the expected viewership.
T-Sides – The T-Sides as stated in their name, are a T shape type of advertisement, it stretches across the side of the bus. This advertisement would be good for a route that crosses multiple areas or where there are high value buildings such as Central London, they usually stand out because there are so many things that can be done with the big part of the T for example, they can use people in the advertisement or showcase their product.
Supersides – Supersides are similar to the t-sides but doesn’t have the T shaped and instead it’s just a rectangular strip across the side of the bus. They can also be digital sometimes
Streetliners – Streetliners are usually placed under the window and close to the floor, it would be good placed on a small single decker buses as that would be the main focal point of the bus as well as it focuses more on local journeys and up small side streets.
Backs/Rears – There are two versions of the back (super/mega and solus), you got the back that usually sits on the engine grill or you got the rear that covers the whole back
Passenger interior – The passenger interior is placed inside the bus, usually placed close to the lights. Its good advertising as a lot of people get on and off the buses and when people get bored, they could potentially read the advertisements .
Bus Wraps – Bus wraps, the cover the whole bus, everyone can see it and it usually intrigues people a whole lot more because full bus wraps are rare and really stands out across the plain busses