A CRITICAL REVIEW ON CAPACITY ESTIMATION APPROACHES FOR MIXED TRAFFIC CONDITIONS IN DEVELOPING COUNTRIES

摘要

With the advancement in the vehicular technology, this modern world is facing uniquechallenges in traffic scenario. A spectrum of problems and diversity in capacity estimationis observed, as researchers have focused on the issue of quantifying and tackling complexvehicular interactions in heterogeneous traffic, since decades. Thus, findings like inabilityto follow lane based approach in traffic management in mixed traffic interactions given theconditions of road geometrics necessitated the course of research in developing countriesto estimate capacity through thorough understanding of every deviation from existinghomogenous lane disciplined models and methods. Developed countries like USA,Australia, etc. have integrated their researches as a fine standard manual to guideengineers and highway planners as Highway Capacity Manual (HCM). The type of traffichomogenous or heterogeneous experienced on the roads of developed or developingcountries itself draws the line between standards and methods adopted for traffic planningand management in the respective scenarios. Resorting to the basics of capacityevaluation and yet accounting the deviations observed in mixed traffic from standard idealtraffic conditions, numerous works have been conducted worldwide. This paper aims toconsolidate the literature marking important evolutions of mathematical methods andlogical concepts of estimating highway capacity and its parameters in mixed traffic specificto uninterrupted flow facilities in developing nations. An important aspect of the paper issummarizing the gaps in the available literature which can be looked upon for furtherresearch.