| Summary: | 碩士 === 國立交通大學 === 交通運輸研究所 === 86 === The Less-than-truckload (LTL) motor carrier is a regular route
system that generally uses a breakbulk or hub-and-spoke system
to consolidate freight. In recently, due to the growing concern
about the deregulation of the motor carrier industry and the
emergence of customer-oriented service, the LTL motor carriers
must do something to improve their services. Traditionally, LTL
motor carriers have operated on the basis of two assumptions
.The first of these is that they are subdivide the operation
system improve each part independently, the"glue"the improved
parts back together with the expectation of overall operation
system improvement. The second is that maximizing the
performance of each part of the operation system will result in
maximum. In reality, operation system behave more like chains :
one weakest link determines how well the entire chain can perfo
Generally, the theory of constraints has been used in real-
environment contains two aspects: one is "policy constraints
analysis", and the another is "physical constraints analysis".
In policy analysis, we apply several tree diagrams to exploit
the core constraints of Taiwan''s LTL motor carriers, and adopt
the Drum-Buffer-Rope (DBR) approach to create "injections". In
physical analysis, we apply "buffer management" to improve the
physical problems in Taiwan''s LTL motor carriers. By means of a
case study, We know that the "constraints" or "core problem"
may be different among LTL motor carriers. However , the methods
of using theory of constraints to study the service management
for LTL motor carriers can apply to other situations .
Therefore, we provided some discussions and suggestions to the
managers of motor carriers and later research.
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