Jetfoil

1) Fast craft propelled by water jet - advance version of the hydrofoil. Rides on foils that lift the hull above the water thus producing a smoother ride for passengers.

Jake brake

1) Secondary engine braking system, operated by driver from switch on the dashboard. An engine compression brake which converts a heavy diesel engine into a compressor, popping the exhaust valve just before the piston hits TDC to stop normal ignition phase.

Jack-knife

1) Term for very dangerous accident situation where semi-trailer of articulated combination pushes rear axle of tractive unit out of line so whole combination forms a 'jack-knife', usually completely out of driver's control.

ItT

1) Invitation to tender. Procedure involved in selecting third-party logistics contactors (ie inviting potential contractors to submit their proposals). The document is key to the process because it defines in a standard format and in precise detail the task to be undertaken.

ITO

1) Industry Training Organizations. Department of Employment supported bodies that set training standards in most industries - they replace Industry Training Boards (ITBs).

Iteration

1) Term basically meaning trial and error. A practice often used in connection with studies on alternative distribution/logistics strategies seeking to find 'best' solutions.