This document has been declared "Stabilized" and will no longer be subjected to periodic reviews for currency. Users are responsible for verifying references and continued suitability or technical requirements. New technology may exist. The following recommendations and suggestions are made for consideration for procurement of new equipment, or modification to existing equipment where practical. Excluded from this AIR is mobile ground equipment, such as fork lift trucks and from end loaders, that have a functional requirement for simultaneous vehicle motion and accessory operation .