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Cities and traffic have developed hand-in-hand since the earliest large human
settlements and forcing inhabitants to congregate in large urban areas and in
turn enforcing need of urban transportation.
To develop efficient street transportation, to serve effectively various land
use in an urban area, and ensure community development, it is desirable to
establish a network of streets divided into systems, each system serving a
particular function or particular purpose.
Accordingly, a community should develop an ultimate street-classification in
which each system has a specific transportation service function to perform.
There are several operational performance measures and level of services (LOS)
which have to be taken into account to evaluate the system of streets.
Increasing population of urban areas due to shifting of people from rural to
urban areas and thus certainly increasing vehicular population on urban
streets, have caused problems of congestion in urban areas.
Road traffic congestion poses a challenge for all large and growing urban
areas.
This document provides a summary of urban street with respect to their
classification, related operational performance measures and level of services
(LOS) involved in each class of urban street and it also provides strategies
necessary for any effective congestion management policy to curb the
congestion.
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