ANALYSIS OF ALTERNATIVE DLT SIGNALIZED INTERSECTION WITH SIMULATION

Year 2025, Volume: 7 Issue: 2, 213 - 235, 28.02.2025

Hüseyin Yılmaz , Mustafa Ilıcalı

https://doi.org/10.56809/icujtas.1494087

Abstract

When we look at intersection applications around the world, new non-traditional intersection designs have emerged between At-Grade Intersections and Different Level Intersections. Displaced left turn (DLT) intersection design is also one of the non-traditional intersection designs. These intersections are also known as Continuous flow intersections (CFI) in the literature. In this paper, a new intersection design has been created as an alternative to the DLT intersection design. This design was analyzed and compared with the traditional signalized intersection design in five different vehicle volume scenarios with PTV Vissim and Synchro simulation programs.According to the analysis results; It was observed that there was an improvement of 61.54% in average delay time, 101.70% in average speed, 33.82% in total travel time, and 51.74% in total delay time.
It has seen that alternative DLT design can be preferred as a solution in narrow urban areas because it is a design that can be applied in smaller intersection areas compared to the DLT design.

Keywords

Alternative DLT, signalized intersection, innovative intersection, DLT, CFI

ALTERNATİF DLT SİNYALİZE KAVŞAĞIN SİMÜLASYON İLE ANALİZ EDİLMESİ

Abstract

Dünya genelindeki kavşak uygulamalarına bakıldığında Eşdüzey Kavşaklar ve Farklı Düzeyli Kavşaklar arasında geleneksel olmayan yeni kavşak tasarımları ortaya çıkmıştır. Displaced left turn (DLT, Yerinden edilmiş sola dönüş) kavşak tasarımı da geleneksel olmayan kavşak tasarımlarından birisidir. Bu kavşaklar literatürde Continuous flow intersection (CFİ, Sürekli akış kesişimleri) olarak da bilinirler. Bu makalede DLT kavşak tasarımına alternatif yeni bir kavşak tasarımı oluşturulmuştur. Bu tasarım geleneksel sinyalize kavşak tasarımı ile beş ayrı araç hacim senaryosunda PTV Vissim ve Synchro simülasyon programları ile analiz edilerek karşılaştırılmıştır. Analiz sonuçlarına göre; ortalama gecikme süresinde %61.54, ortalama hızda %101.70, toplam seyahat süresinde %33.82, toplam gecikme süresinde %51.74 iyileşme olduğu görülmüştür.
Alternatif DLT tasarımının, DLT tasarımına göre daha küçük kavşak alanlarında uygulanabilecek bir tasarım olması sebebiyle dar kentsel alanlarda çözüm olarak uygulanabileceği sonucuna ulaşılmıştır.

Keywords

Alternatif DLT, sinyalize kavşak, yenilikçi kavşak, DLT, CFI

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