What type of permit allows individuals to maintain Airside driving privileges during license suspension?

The Restricted Driving Permit is the correct choice because it specifically allows individuals to retain certain driving privileges, including airside driving, even if their regular driving license has been suspended. This type of permit is typically issued under conditions that permit limited use of a vehicle for specific purposes, such as work-related activities or accessing necessary locations, which can include airport operations for ramp agents.

In the context of airside driving, this permit is crucial for individuals who require access to the airside area of an airport in order to perform their job duties despite having a suspended regular driver's license. The other types of permits mentioned do not generally provide the same level of access required for airside operations or are restricted to different circumstances.