l points to destination. As a draft plan, it is supposed to spread out facilitating and servicing people in 2016. The nine mass transit railway lines are the following; (As shown in Figure 1)
             1. Slightly green 3.Purple 5.Green 7.Blue 9. Red
             2. Pink 4.Slightly Blue 6.Orange 8.Yellow
             The Thai Government authorized these projects to construct initially in 2009, the slightly green and the red lines have been constructed since last year. Meanwhile, the slightly blue and the pink lines have started providing construction area to pile, and the rest of overall plan are still in the progress of in-depth consideration between the Government and stakeholders. However, in the latest circumstance, while the Government is operating on the tender process, there are several companies interested in offering tender to the Government even if a number of different criteria occurred in each line.
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