Some limitations of long term billboard rentals are:
- Long-term billboard rentals cost more since the space is booked for several months or years.
- Long term contracts lock money for many months at a time.
- If premium roadside spots used then the rent is higher for long leases.
- Also advertisers pay extra when they renew the same billboard for new campaigns.
- If billboard is used longer then it also increases upkeep like cleaning and lighting.
Also check out some advantages and disadvantages of billboard advertising to get complete list of all main points.