Billboard advertising is the process of using a large-scale print advertisement to market a company, brand, product, service, or campaign. Billboards are typically placed in high traffic areas, such as along highways and in cities, so they’re seen by the highest number of drivers and pedestrians.

Here are the three main factors:

1. Circulation is the total number of people who pass by the billboard each week. This information is gathered by local transportation authorities.
2. Demographics refer to the age, gender, income level, and other characteristics of the traffic that passes the billboard. This information is gathered from travel surveys and local transportation authorities.
3. Impressions are the number of people who see the billboard. This information is calculated based on the billboard’s circulation, the size of the billboard, how close it is from the road, its visibility, the speed at which traffic is passing by, and more.