Evaluation and Simulation of New Roundabouts Traffic Parameters by Aimsun Software

Document Type : Original Article

Authors

Department of Transportation Planning, Faculty of Civil Engineering, Iran University of Science and Technology, Tehran, Iran.

Abstract

New roundabouts are innovation and revolutionary in roundabout design, with the risk of incidents in these roundabouts far less than traditional common roundabouts. These types of roundabouts control the traffic flow at the entrance and exit of the roundabout, with the guidance of drivers to isolated lines before entering the roundabout and guidance to the spiral lines inside the roundabout as channelized. Another advantage of these roundabouts is the much more balanced division of traffic flows than traditional ones. In Iran, in view of the many problems of capacity, flow and safety of intersections and intersections, this type of roundabout can be very useful in certain conditions. In this research, how these roundabouts are compared and also the comparison of different input capacities based on the origin - destination demand matrix for new roundabouts and common roundabouts of two lanes with the help of Aimsun traffic simulation software have been investigated. For this purpose, the values of traffic indicators of delay time, density, flow, stop time and travel time of computer simulations for new roundabouts and common roundabouts have been investigated and compared. According to the demand matrix of the origin-destination models loaded in the software and comparisons done, the optimal model for the highest capacity and the lowest delay time and travel time is presented. In this simulation, 8 to 16 percent increase in traffic flow and a decrease of 34 to 59 percent for travel time and delay time in the new roundabouts is shown in comparison with the common two-lane roundabouts.

Keywords

Main Subjects

References

1. Moughtin C. Urban design: street and square: Routledge; 2007.
2. Ogundele F, Tiamiyu I, Iwara AI. Assessment of heavy metal sources across urban transportation facilities in Lagos Metropolis, Nigeria. Confluence Journal of Environmental Studies. 2017;11(2):19-26.
3. Le H, Buehler R, Hankey S. Toward Generalizability in Direct-Demand Modeling: Exploratory Models from 20 US Jurisdictions. 2018.
4. Hasnine MS, Weiss A, Nurul Habib K. Development of an employer-based transportation   demand   management   strategy   evaluation   tool   with   an advanced discrete choice model in its core. Transportation Research Record: Journal of the Transportation Research Board. 2016(2542):65-74.
5. Bigdeli Rad H, Bigdeli Rad V. A Survey on the Rate of Public Satisfaction about Subway Facilities in the City of Tehran Using Servqual Model. Space Ontology International Journal. 2018;7(1):11-7.
6. Tarko AP. Surrogate measures of safety.   Safe Mobility: Challenges, Methodology and Solutions: Emerald Publishing Limited; 2018. p. 383-405.
7. Wang L, Abdel-Aty M, Wang X, Yu R. Analysis and comparison of safety models using average daily, average hourly, and microscopic traffic. Accident Analysis & Prevention. 2018;111:271-9.
8. Kieć M, Ambros J, Bąk R, Gogolín O. Evaluation of safety effect of turbo- roundabout lane dividers using floating car data and video observation. Accident Analysis & Prevention. 2018.
9. Fortuijn L. Turbo roundabouts: Design principles and safety performance. Transportation Research Record: Journal of the Transportation Research Board. 2009(2096):16-24.
10. Robinson B. Roundabouts: an informational guide. US Department of Transportation, Federal Highway Administration. Report FWHA-RD-00-067, Washington, 2000.
11. Mauro R, Branco F. Comparative analysis of compact multilane roundabouts and turbo-roundabouts. Journal of Transportation Engineering. 2009;136(4):316-22.
12. Ticali D, Corriere F. Turbo roundabouts: geometric design parameters and performance analysis. GSTF Journal on Computing (JoC). 2018;2(1).
13. Officials T. A Policy on Geometric Design of Highways and Streets, 2011: AASHTO; 2011.
14.   Fernandes   P,   Coelho   M,   editors.   Making   Compact   Two-Lane Roundabouts Effective for Vulnerable Road Users: An Assessment of Transport-Related Externalities. Scientific And Technical Conference Transport Systems Theory And Practice; 2018: Springer.
15. Novák J, Ambros J, Frič J. How roundabout entry design parameters influence safety. Transportation Research Record. 2018:0361198118776159.
16. Di Mascio P, Loprencipe G, Moretti L, Corazza MV, Vivaldi S, Vincenti G. Design of the First Italian Roundabout with Jointed Plain Concrete Pavement. Applied Sciences. 2018;8(2):283.
17. Šurdonja S, Dragčević V, Deluka-Tibljaš A. Analyses of maximum-speed path definition at single-lane roundabouts. Journal of Traffic and Transportation Engineering (English Edition). 2018;5(2):83-95.
18. Bovy PH. Zusammenfassung der schweizerischen Kreiselhandbuchs, Straße und Verkehr, Vol. 77, No. 3. Lausanne, Schweiz. 1991:129-39.
Journal of Civil Engineering and Materials Application
Volume 2, Issue 3
September 2018
Pages 146-158

Files

History

  • Receive Date: 09 May 2018
  • Revise Date: 22 July 2018
  • Accept Date: 23 August 2018
  • First Publish Date: 01 September 2018

Share

How to cite

Statistics