Are food trucks allowed in Oak Park? Yes
Are there requirements and applications that must be filled out in order for them to operate in Oak Park? Yes
In order to operate a food truck in Oak Park on private property a food vendor application must be filled out and the requirements must be met.
In order to have a food truck at an event you are considering having on public property the food truck must be properly licensed and a special event permit must also be completed.
To find the applications/permits/licenses go here --> bit.ly/ClerkPermits
Original source can be found here.