Citation

Nazaryan N, Fang FC. Int. J. Traffic Transp. Eng. (Rosemead, Calif.) 2020; 9(2): 25-36.

Copyright

(Copyright © 2020, Scientific and Academic Publishing)

DOI

10.5923/j.ijtte.20200902.01

PMID

unavailable

Abstract

This paper reports about an investigation of the effect of the length of an additional approaching lane of a roundabout on the delay. To calculate delay, a mathematical algorithm has been developed, representing dependence of velocity a traveling vehicle on its traveling distance The study shows a mathematical algorithm which can supply more accurate and simpler calculations, represented through the sixth-degree polynomial function possessing just three extrema points: a maximum and two minimums. It is shown that application of data collection on existing additional lanes, performed during different periods of time during weekdays will allow us to obtain the family of curves , where each curve will have its own individual extrema points with the consequent coordinates and These curves, obtained on the base of the analytical function and the practical data collection, will allow road engineering experts to design a roundabout's additional approaching lane and to estimate the proper delay with the very high degree of accuracy.

Language: en