2. Disability Vans/Wheelchair Bus - The van has any or all of the following structural modifications that enable a person in a wheelchair to use the van: raised roof to allow proper clearance through the door, raised roof to allow adequate head clearance, lowered or dropped floor to allow adequate head clearance. These changes are made necessary because a person sitting in a wheelchair will almost always sit higher than a person sitting in the van's OEM seats. In all cases a platform lift is added to either the rear doors or passenger side doors to enable the person in a wheelchair to enter/exit the van. A lowered floor modification can be done just in the cargo area to save money whereas a full lowered floor is one in which both the cargo area and driver/passenger area are lowered. Standard lowered floor conversions are 6" and 9".
