Garage Location Selection for Public Transportation System in Istanbul
Read this article. The study covered uses various tools to determine the best location for bus garages to operate including maintenance and repair activities. Focus on Figure 1 in the Methodology section as it visually demonstrates the analytical process.
Conclusion
Istanbul is a growing city and the land use is very
important in terms of the city master plans. Considering this reality,
we determined probable bus garage locations by taking the opinions of
IETT authorities. The main contribution to the literature is applying
fuzzy AD and weighted fuzzy AD integrating with fuzzy AHP to select the
best alternative garage location for the biggest city in Turkey,
Istanbul.
The aim of using AD is taking into account the design
ranges for all attributes. Besides, making the evaluation by using
linguistic terms and transforming them into fuzzy numbers is an easier
way for decision makers. It helps the decision maker to select the most
appropriate alternative that is suitable with his/her design features.
This is the strength of the proposed method over the existing ones. AD
approach uses design ranges for each criterion, determined by the
designer. Thus, the alternatives, which ensure the design ranges, are
selected in AD approach. However, other multicriteria methods select the
alternatives that meet the criteria at their best levels. The AD
approach also differs from many other existing methods from the point of
the rejection of an alternative when it does not meet the design range
of any criterion.
By taking these advantages, fuzzy AD is applied
and Arnavutköy for European Side and Sultanbeyli for Asian Side of
Istanbul are selected. In weighted fuzzy AD the same garage locations
are selected. Even if the obtained results are similar, the weights of
the criteria generally very important in terms of the decision makers.
In scenario analysis, effects of the criteria weights on the results are
depicted.
After manual calculations, we solved our problem by
ADSolver which solves the problem directly in terms of the user. This
computer program is very useful for the decision makers and it increases
the applicability of the approach. In future studies, the combined
transportation systems in different modes can be adapted to the problem.
The effect of this enhancement will be an increase in the number of
criteria. Under this circumstance solving the problem by ADSolver will
be more significant.