A Comparison of the Saturation Flow Rates Obtained From Field Observations and Highway Capacity Guides for the Signalized Intersections in Iran and To Identify the Most Appropriate Guides

Authors

1 M.Sc., Grad., Faculty of Civil Engineering, Yazd University, Yazd, Iran

2 Associate Professor, Faculty of Civil Engineering, Yazd University, Yazd, Iran.

Abstract

The saturation flow is one of the essential parameters for analysis and design of signalized intersections. The value of this parameter is affected by traffic behavior and other conditions in each country. On this basis, different values and methods are proposed in the highway capacity guides of different countries. There have been limited researches to estimate this parameter under Iranian traffic conditions. In this study, field measurements of saturation flow for14 entry approaches related to the signalized intersections, located in the city of Yazd in Iran, were conducted and then compared with their corresponding values estimated from Highways Capacity Guides of  United States, Canada, Australia, Malaysia, Indonesia and Iran. The results indicated that for the protected-left turn movements, Australian Guide and in a close competition, Iranian Guide outperformed other guides. For the un-protected left turn movements, American Guide outperformed other Guides. The results indicated that the current Iranian Guide is not appropriate the un-protected left-turn conditions and further researches and developments in this area are needed.
 
 
 

Keywords

References

-بابازاده، ع.، (1388)، "مقایسه کاربردی دستورالعمل‌های رایج در محاسبه نرخ جریان اشباع در تقاطع­های چراغدار ایران"، اولین کنفرانس ملی مهندسی و مدیریت زیرساختها. 
-سازمان برنامه‌وبودجه (1376)، "تقاطع‌های هم‌سطح شهری: سوابق مطالعات"، نشریه شماره 145-3، معاونت امور فنی و تدوین معیارها.
-ملکان، خ. اسدی، م.م. و حداد، د.،(1393)،"روش‌های برآورد پارامترهای ترافیکی تقاطعات چراغدار-مطالعه موردی شهر تهران"، چهاردهمین کنفرانس بین­المللی مهندسی
حمل­ونقل و ترافیک، تهران، ایران 
-Akcelik, R. (1981), "Traffic Signals: Capacity and Timing Analysis", Australian Road Research Board (ARRB), Research Report No. 123 and Appendix, Australian Road Research Board, Melbourne.
-Anusha, C. S., Verma, A. and Kavitha, G. (2013), "Effects of Two-Wheelers on Saturation Flow at Signalized Intersections in Developing Countries", Journal of Transportation Engineering(ASCE).
-Austroads. (2009), "Guide to Traffic Management", Part 3: Traffic Studies and Analysis, AGTM03/09, Sydney.
-Greenshields, B.D., Shapiro, D. and Ericksen, E.L. (1947), "Traffic Performance at Urban Intersections", Technical Report No. 1, Bureau of Highway Traffic, Yale University.
-Indian Road Congress, (1994), "Guidelines for the Design of At-Grade Intersection in Rural & Urban Areas", IRC-SP-41.
-Indonesian Directorate General of Highways. (1993), "Indonesian Highway Capacity Manual, Urban and Semi-urban Traffic Facilities", Ministry of Public Work.
-Malaysian Ministry of Works. (2006), "Malaysian Highway Capacity Manual 2006", Chapter 3.
-Minh, C. C. and Sano, K. (2003), "Analysis of Motorcycle Effects to Saturation Flow Rate at Signalized Intersection in Developing Countries", J. East. Asia Society of Transport Studies.
-Raval, N.G. and Subhas K. C. S. (2014),"Development of Saturation Flow Model for Mixed Traffic on Urban Arterial Roads, Intersections", International Journal for Scientific Research&Development, Vols. 2(3),. ISSN (online): pp.321-0613.
-Savitha, B. G., Murthy, R. S., Jagadeesh, H. S., Sathish, H. S. and Sundararajan, T. (2017), "Study on Geometric Factors Influencing Saturation Flow Rate at Signalized Intersections under Heterogeneous Traffic Conditions", Transportation Technologies.
-Teply, S., Allingham, D. I., Richardson. D.B. and Stephenson, B.W. (2008), "Canadian Capacity Guide for Signalized Intersections", Committee on the Canadian Capacity Guide for Signalized Intersections, Third Edition, February.
-Transport and Road Research Laboratory. (1963), "A Method of Measuring Saturation Flow at Traffic Signal", Road Note No. 34, London.
-Transportation Research Board. (2010), "Highway Capacity Manual", Transportation Research Board-National Research Council, Washangton D.C.
-Zhang, G. and Chen, J. (2009), "Study on saturation flow rates for signalized intersections", Proc., Int. Conf. on Measuring Technology and Mechatronics Automation, IEEE, New York, pp.598-601.

Files

Share

How to cite

Statistics