Implementing Estimation of Capacity for Freeway Sections

Capacity Drop Estimation Based on Stochastic Approach Applied to Tehran-Karaj Freeway

Existence of capacity drop phenomenon, as the difference between pre-queue and queue discharge flow rates, has been one of the controversial concepts of traffic engineering. Several researches have focused on capacity drop existence and also its estimation issues. This paper aims to estimate capacity drop based not only on a comparison between breakdown and queue discharge flow rates, but also ...

Estimating the Capacity of the Basic Freeway Section Using Headway Method in Developing Countries (Case Study: Iran

Although there are remarkable differences in drivers’ behavior as well as vehicles characteristics, road capacity estimationmethods in developing countries are same as developed ones. So, the discrepancy between the theoretical andpractical values of capacity is inevitable. Although, capacity estimation methods can be classified based on numerousparameters, in developing count...

CENTER FOR TRANSPORTATION STUDIES RESEARCH PROJECT PROPOSAL Research Project Title: DYNAMIC ESTIMATION OF FREEWAY WEAVING CAPACITY FOR TRAFFIC MANAGEMENT AND OPERATIONS, PHASE II Principal Investigator Information

Understanding the behavior of weaving flows and estimating the effects of time-variant traffic conditions on the capacity of weaving areas is of critical importance in developing effective operational strategies, which can achieve the maximum utilization of existing capacity for a given freeway system. The previous phase of this research identified and classified the major weaving areas in the ...

Model-based Estimation of Congestion-related Travel Time Losses on Freeways

For the economic assessment of road infrastructure investments and the evaluation of operational strategies, the estimation of travel times is of particular importance. The paper introduces a twocomponent model to estimate total or average travel times on freeways. The model differentiates between travel times in fluid traffic conditions, which depend on the length of the segment, and congestio...

A Nonparametric Bayesian Estimation of Freeway Capacity Distribution from Censored Observations