Study of a Highly Effective and Affordable Highway Interchange - ITL Interchange

Goran Jovanović, Rafko Atelšek


In this paper we present a new solution for the highway interchange, which represents the best compromise between the traffic capacity, the land area used and construction cost. The difference between the known and the new design solution is in the implementation of the opposite directional ramps which are widely separated in the area of the interchange. In the middle, between the directional ramps, some space is created for the left directional ramps. Interchange should be used for four-way highway interchanges or other heavy traffic roads junction in order to increase the capacity and traffic safety at the crossing point. It has no conflict points. ITL Interchange left directional ramps is much shorter than all other known solutions for interchanges. The interchange is built in two levels. These two facts significantly lower the cost of construction. The study compares different types of interchanges. We made a geometric comparison and performance measures. In geometric comparison, the greatest advantages of the ITL interchange are the shortest overall roadway length and the shortest overpasses length. Therefore, such an interchange is advantageous in terms of construction and maintenance costs. When measuring performance, ITL Interchange achieves the best results regardless of the number of vehicles.


Highway; ITL Interchange; Left Directional Ramp; Traffic Capacity.


Bonneson, James, Karl Zimmerman, and Marc Jacobson. "Review and evaluation of interchange ramp design considerations for facilities without frontage roads." (2003) (Texas Transportation Institute, Report 0-4538-1, 144 p.).

Aušrius Juozapavičius, Stanislovas Buteliauskas, Rimvydas Krausauskas, “Interchange of a New Generation Pinavia”. General Jonas Žemaitis Military Academy of Lithuania, Šilo 5A, 10322 Vilnius. Vilnius University, Department of Mathematics and Informatics, 2010.

Abolfazl Samadi Heidar Abadi, Ali Abdi. “Comparison of Pinavia Interchange Vs Interchange's All Directional and Nano of Traffic Operation and Safety with Traffic simulation.” International Journal of Advanced Biotechnology and Research (7) Special Issue 3 (April 2016): 392-403.

Findley, Daniel J., Bastian Schroeder, Christopher Cunningham, and Tom Brown. Highway Engineering: Planning, Design, and Operations. Butterworth-Heinemann, 2015.

Garrett, Mark, ed. Encyclopedia of transportation: Social science and policy. SAGE Publications, 2014.

Torbic, Darren J., Lindsay M. Lucas, Douglas W. Harwood, Marcus A. Brewer, Eun Sug Park, Raul Avelar, Michael P. Pratt, Akram Abu-Odeh, Elizabeth Depwe, and Kimberly Rau. Design of Interchange Loop Ramps and Pavement/Shoulder Cross-Slope Breaks. No. NCHRP Project 03-105, Phases I, II, and III. 2016.

AASHTO. A policy on geometric design of highways and streets. 6th edition, 2011.

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DOI: 10.28991/cej-2020-03091510


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