[Two Level Signalized Interchange (TLSI)] Five-point intersection application of Two-Level Signalized Interchange       14844    
Five-point intersection application of Two-Level Signalized Intersection
(1)
Incoming traffic from A and D pass through the upper level, while traffic from B, C and E pass through the lower level. In other words, the top level would utilize a two-phase signal system, while the lower level would utilize a three-phase signal system. Only the right turns made from traffic incoming from D are routed to the lower level.
(2)
Incoming traffic from A and E pass through the upper level, while traffic from B, C and D pass through the lower level. Again, the upper level would utilize a two-phase signal system, while the lower level would utilize a three-phase signal system. Only the right turns made from traffic incoming from E are routed to the lower level.
(3)
Incoming traffic from B and D pass through the upper level, while traffic from A, C and E pass through the lower level. Again, the upper level would utilize a two-phase signal system, while the lower level would utilize a three-phase signal system. Incoming traffic from B and D that make right turns are processed on the upper level.
Of course, in applying the two-level signalized intersection (TLSI), the upper level could be in a three-phase signal system, and the lower level could be in a two-phase signal system. Decision to utilize two-phase signal system for which road depends on the amount of traffic in each direction and road condition. It is possible to take the signalized interchange to six-point intersection or more. For a six-point interchange, each of the upper and lower levels would have a three-phase signal system.

* There is a list of variations in application of the Two-Level Signalized Intersection to the four-point intersection. Please refer to the variations on the two-level signalized intersection on the four-point intersection.

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ÀÌÀü±Û  Variations on the two-level signalized intersection on the four-point intersection
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