The outdoor advertising industry is the fastest growing advertising medium behind online, for many reasons.
Billboards can reach consumers in places other mediums simply cannot go. People are spending more time out of their home due to an increase in income, allowing for more spend on travel, hospitality, entertainment and shopping. This has meant traditional mediums are now struggling to reach these on-the-go consumers, especially now that there are also numerous ways to avoid traditional advertising. Billboards have become the last true broadcast medium as a result, which is one of the many reasons why the medium keeps growing (statistics indicate the outdoor advertising industry is growing 9% year-on-year).