joint cost:
A common cost in cases where a company produces products in fixed proportions and the cost the company incurs to produce one product entails producing another; the backhaul is an example.

joint rate:
A rate over a route that requires two or more carriers to transport the shipment.

just-in-time (JIT) inventory system:
An inventory control system that attempts to reduce inventory levels by coordinating demand and supply to the point where the desired item arrives just in time for use.

Just-in-Time Logistics (or Quick Response):
The process of minimizing the times required to source, handle, produce, transport, and deliver products in order to meet customer requirements.