An Improvement of Three Leg Signalized Intersections in Duhok City Kurdistan-Iraq

Authors

  • Baran R. Omer Department of Civil Engineering, College of Engineering, University of Duhok, Zaxo St., Duhok, Kurdistan Region – F.R. Iraq
  • Sherzad W. Khalid Department of Civil Engineering, College of Engineering, University of Duhok, Zaxo St., Duhok, Kurdistan Region – F.R. Iraq

DOI:

https://doi.org/10.25007/ajnu.v7n4a275

Keywords:

Roads, Intersection, Signalized Intersections, Three leg signalized intersection, Volume

Abstract

Nowadays, number of cars increases in Iraqi Kurdistan. Duhok is one of the Iraqi Kurdistan cities where an enormous increase in the number of cars and population is noticed during the last decade. Roads were been mended according to the 1970s plans where the city was small and number of cars was few. Although the city geographically is located in a hilly area and between two mountains, mending roads is a problem of area. Roads in the mentioned city are quite busy due to the high number of cars, traffic jams can be noticed in every corner of the city especially in signalized intersections. The level of service (LOS) in most of the signalized intersections is F or E. in order to lower the high (LOS), a three leg signalized intersection has been chosen to do an improvement on. During the study the number of the cars (Volume) have been enumerated in all lane groups and the results showed that the (LOS) was E in the intersection. As a result, some solutions have been provided according to the site area and the traffic flow. Solutions were geometric changes, cycle time changes or combination in both geometric and cycle time changes. According to the collected data, it was found that level of service was E for WB and SB and for EB was D. Based on data analysis it was found that LOS has not been improved when only one of the mentioned solutions is applied. In order to have the best improvement, the combination between geometric and cycle time length changes are applied. Analysis showed that there was a remarkable improvement in LOS and changed from E to D.

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References

1. American Association of State Highway and Transportation Officials (AASHTO), A Policy on Geometric Design of Highways and Streets, Fifth Edition, 753-755,(2004).
2. Schadschneider, T.Poschel, R. Kuhme, M. Schreckenberg, D.E. Wolf. “Traffic and Granular Flow”, Springer-Verlag Berlin Heideberg, (2007).
3. Bent Thagesen, “Highway and Traffic Engineering in Developing Countries”, by E & FN Spon , London (1997).
4. Federal Highway Administration, US Department of Transportation. Retrieved from https://safety.fhwa.dot. gov/intersection/conventional/signalized/fhwasa13027/ch7.cfm
5. Highway Capacity Manual (HCM) (2000). Transportation
6. Research Board, National Research Council,Washington D.C., (2000).
7. M. Slinn, P. Matthewes, P.Guest, “Traffic Engineering Design, Principles and Practice”, 2nd Edition, Elsevier Ltd, (2005).
8. O’Flaherty, C.A., “Transportation Planning and Traffic Engineering”, (1997).
9. Roess, R.P. and Prassas, E.S. and Mcshane, W.R., “Traffic Engineering”,Pearson Prentice Hall, 3rd Edition,( 2004).
10. R.L. Brockenbrough, K.J. Boedecker,JR., “Highway Engineering Handbook”, 2nd Edition,McGraw Hill, (2004).
11. R. Robinson, B. Thagesen, “Road Engineering for Development”, 2nd Edition,Spon press,London (2004).
12. W.F. Chen, and J.Y. Richard Liew “The Civil Engineering Handbook”, 2nd Edition,CRC press LLC, (2003).
13. Xin Yu and Goro Sulijoadikusumo. Assessment of Signalized Intersection Capacity in Response to Downstream Queue Spillback. Retrieved from https://www.westernite. org/annualmeetings/12_Santa_Barbara/Compendium/2C-Yu-Sulijoadikusumo.pdf.

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Published

2018-12-21

How to Cite

Omer, B. R., & Khalid, S. W. (2018). An Improvement of Three Leg Signalized Intersections in Duhok City Kurdistan-Iraq. Academic Journal of Nawroz University, 7(4), 87–92. https://doi.org/10.25007/ajnu.v7n4a275

Issue

Vol. 7 No. 4 (2018)

Section

Articles

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