A modified approach for estimation of Passenger Car Units on intercity divided multilane highways
Journal Title: Archives of Transport - Year 2017, Vol 42, Issue 2
Abstract
The accuracy of measured traffic flow on a roadway is highly depends on correctness of PCUs used for converting traffic volume. Field data for the present study was collected from the mid-block road sections of different divided multilane highways in India. Video graphic method was used for collecting the field data. PCUs are estimated from the available methods as given in the literature by using traffic flow data observed in the field. Present study describes a modified methodology for estimation of PCU value of subject vehicles that includes the time headway as influencing parameter. The approach used in the present study is inspired from the method of dynamic PCU estimation where a PCU is expressed as the ratio of speed ratio and area ratio of standard cars to the subject vehicle type. Unlike dynamic PCU method, this method includes time headway factor for PCU estimation. The method found more realistic and logical as it provides relatively higher values of PCUs than those obtained from dynamic PCU method. Simulation of traffic flow was also performed through microscopic simulation model VISSIM for generating congestion and for comparing estimated PCU values at the level of maximum traffic volume. The methodology adopted in this study will be extended for development of comprehensive PCU model by including more numbers of influencing factors under varying traffic and roadway conditions.<br/><br/>
Authors and Affiliations
Seelam Srikanth, Arpan Mehar
An advanced planner for urban freight delivering
The paper aims at introducing an advanced delivery tour planner to support operators in urban delivery operations through a combined approach which chooses delivery bays and delivery time windows while optimizing the del...
Studies and assessment of transport noise in Poznan
In many cities in Poland, because of the lack of ring roads, the main traffic routes of state roads go through the cities affecting local and regional traffic. This causes high traffic and also many undesired effects for...
Selected Problems of Determining the Course of Railway Routes by Use of GPS Network Solution
The main problem related to railroad surveying design and its maintenance is the necessity to operate in local geodetic reference systems caused by the long rail sections with straight lines and curvatures of the running...
Object-oriented programming as a method for developing software in rail-traffic-control computer systems
The paper focuses on a new method for specifying safe software for rail traffic control systems. The presented method is particularly convenient to define typical devices and subsystems used in traffic control, defined a...
Modelling and analysis of transportation networks using complex networks: Poland case study
In the paper a theoretical bases and empirical results deal with analysis and modelling of transportation networks in Poland using complex networks have been presented. Properties of complex networks (Scale Free and Smal...