Impact of modification

When an Equipment Type Category is changed to "Tractor" from any of the other supported values ("Trailer", "Undefined", or "Tractor/Trailer"):

• All three of the Usable Dimensions (Length, Width, Height) must be zero.
• The variable loading/unloading time controls for the equipment type will be deleted, if they exist.
• Minimum and Maximum Variable Loading/Unloading Times will be cleared.