General Motors
An example of the use of JIT in General Motors is given below.
General Motors (GM) in the USA has (approximately) 1700 suppliers who ship to 31 assembly plants scattered throughout the continental USA. These shipments total about 30 million metric tons per day and GM spends about 1,000 million dollars a year in transport costs on these shipments (1990 figures).
JIT implies frequent, small, shipments. When GM moved to JIT there were simply too many (lightly loaded) trucks attempting to deliver to each assembly plant. GM's solution to this problem was to introduce consolidation centres at which full truckloads were consolidated from supplier deliveries.
This obviously involved deciding how many consolidation centres to have, where they should be, their size (capacity) and which suppliers should ship to which consolidation centres (suppliers can also still ship direct to assembly plants).
As of 1990 some 20% by weight of shipments go through consolidation centres and about 98% of suppliers ship at least one item through a consolidation centre.
All this has been achieved without sacrificing the benefits of JIT.
An example of the use of JIT in General Motors is given below.
General Motors (GM) in the USA has (approximately) 1700 suppliers who ship to 31 assembly plants scattered throughout the continental USA. These shipments total about 30 million metric tons per day and GM spends about 1,000 million dollars a year in transport costs on these shipments (1990 figures).
JIT implies frequent, small, shipments. When GM moved to JIT there were simply too many (lightly loaded) trucks attempting to deliver to each assembly plant. GM's solution to this problem was to introduce consolidation centres at which full truckloads were consolidated from supplier deliveries.
This obviously involved deciding how many consolidation centres to have, where they should be, their size (capacity) and which suppliers should ship to which consolidation centres (suppliers can also still ship direct to assembly plants).
As of 1990 some 20% by weight of shipments go through consolidation centres and about 98% of suppliers ship at least one item through a consolidation centre.
All this has been achieved without sacrificing the benefits of JIT.