• Pritesh Soni
• Dr. P. J. Gundaliya

The efficiency of any road network is basically depending upon the capacity of individual intersections and a measure of overall performance of urban traffic scenario. The capacity of road network majorly depends upon the unsignalized intersections. Various parameters are responsible for performance of unsignalized intersection like geometrical parameters, composition of traffic, traffic movements and volume etc. In India due to heterogeneous traffic lane priorities are not followed and thus it is essential to study the gap acceptance behavior of the drivers. In recent past many researchers have worked on effect of critical gap on performance of such Intersection for heterogenous traffic. The critical gap is the most important parameter to understand the gap acceptance behavior of drivers and to estimate the capacity of an individual movement. Critical gap is a stochastically distributed value and it cannot be measured using field measurements and it varies with drivers, time, movements and traffic conditions. The critical gap had been an interesting topic for researchers and many researchers have proposed different methods to estimate critical gap. In this paper different methods used to estimate critical gap which are used by researchers in the past years has been reviewed

Critical gap, Gap Acceptance, heterogeneous traffic, Uncontrolled Intersection

"Review on Estimation of Critical Gap at an Unsignalized Intersection", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 3, page no.157-160, March-2019, Available :http://www.jetir.org/papers/JETIR1903127.pdf

"Review on Estimation of Critical Gap at an Unsignalized Intersection", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 3, page no. pp157-160, March-2019, Available at : http://www.jetir.org/papers/JETIR1903127.pdf