To compete with large police SUVs that are sold by other automobile companies, primarily the Chevrolet Suburban, Ford has made a special version of the Expedition available to law enforcement agencies, fire departments, and EMS agencies.
Ford calls it the Expedition Special Service Vehicle (SSV).
The only differences between the standard Expedition and the Special Service Vehicle Expedition are provisions for emergency services related equipment such as radios, lightbars, and sirens.

With the fourth generation Expedition (2018–present) debuting in 2017, Ford announced that the standard size version will be sold to government agencies and law enforcement, available in the lower based XL trim only.
To compete with large police SUVs that are sold by other automobile companies, primarily the Chevrolet Suburban, Ford has made a special version of the Expedition available to law enforcement agencies, fire departments, and EMS agencies. Ford calls it the Expedition Special Service Vehicle (SSV). The only differences between the standard Expedition and the Special Service Vehicle Expedition are provisions for emergency services related equipment such as radios, lightbars, and sirens.
With the fourth generation Expedition (2018–present) debuting in 2017, Ford announced that the standard size version will be sold to government agencies and law enforcement, available in the lower based XL trim only.
Ford Expedition