Author/Authors :
Saw Krishna نويسنده Sardar Vallabhbhai National Institie of Technology, Surat , Katti .B. K نويسنده Sardar Vallabhbhai National Institie of Technology, Surat , Joshi .G نويسنده Sardar Vallabhbhai National Institie of Technology, Surat
Abstract :
Rapid urban growth is resulting into increase in travel demand and private vehicle ownership in urban areas. In the
present scenario the existing infrastructure has failed to match the demand that leads to traffic congestion, vehicular
pollution and accidents. With traffic congestion augmentation on the road, delay of commuters has increased and
reliability of road network has decreased. Four stage travel demand modelling is one of the transportation planning
tools that used to evaluate the impact of future changes in demographics, land use and transportation facilities on the
performance of city’s transportation system. However, this planning tool does not cover the dynamic properties of
flow precisely and ineffective for traffic management and this planning tolls has several unrealistic assumption such as
travel time on link do not vary with the link flows, trip makers have precise knowledge of the travel time on the link.
Therefore, it is needed to revisit the available tool and explore new planning tool which is sensitive to present traffic
pattern of the city. Evolution and operation of Information Transportation System; Advanced Traveller Information
System (ATIS) and Advanced Traveller Management Systems (ATMS) give rise of dynamic based travel demand
modelling which covers dynamic nature of flow over time and space. Dynamic travel demand modelling provides
better planning and management scope in view of this research focus has been diverted to dynamic traffic assignment
(DTA). The main aim of DTA is to manage traffic in a network through real-time measurement, detection, communication, information provision, and control. Here, effort has been made to study the Static Traffic Assignment (STA)
and Dynamic Traffic Assignment (DTA) with special focus on limitations of STA.