Page 28 - TT Magazine Feb-Mar 2019

TRAFFIC MANAGEMENT

is fed back as input for accurate output adaptive traffic system to be successful, through reduced emissions.
in the next cycle. The repetitive process it is important for trained engineers For any rapidly developing country,
of negative feedback makes the system to be deeply involved in deploying the Government-Industry-Academia
a self-learning solution. systems. Calibration of the system to collaboration plays an important role
An important issue in India is the suit the traffic conditions of the city in in adopting proven and sustainable
communication network being available the implementation phase is a critical solutions for a better living.
intermittently. In the event of a failure of success factor, local presence and Finally, effective use of a road could
communications between junctions or expertise should be considered. be achieved by employing the 3E
central computer, the local controllers The effectiveness of a system is usually principle. Engineering, Enforcement
(at each junction) can revert to a form a evaluated by end-users themselves or in and Education. ATCS, help improve
time-based coordination known as Flexi- collaboration with an academic institute. the efficiency of signaling systems in
link. In this mode, adjacent signals are ATCS systems that are independently the city and provides data for effective
synchronised by a clock or power mains evaluated over decades are to have engineering (civil works) of road
frequency. Local vehicle actuations can shown benefits in reduction of stops and network. Different technologies are
also be active in this mode, Flexi-link is delays and thereby cutting down travel being used to bring in traffic-discipline
the usual fallback mode of operation. time are to be chosen. Other important by penalising violators. Education is
One of the other questions to be direct benefits include reduction in fuel an area which has a great scope for
asked is – how will an emergency consumption and better air quality improvement.
vehicle get through to its destination
quickly? VIP movement in cities also
need to be quick and cause minimum
inconvenience to other commuters.
SCATS has a matured emergency
management system, where in a pre-
determined path can be uploaded for
emergency vehicles by a user. Route
pre-emption as it is known allows a user
to manage the sequential introduction
of a green window through a set of
instructions. This is done by an operator
sitting in the control center. Route pre-
emption could significantly reduce the
number of traffic controlling personnel
required at the junctions.
SCATS responds to pedestrian push
button calls and dynamic pedestrian
movements. It also implicitly tracks
pedestrian calls over time and attempts
to consider the effect these movements
have on the road network within the
traffic signal optimization process.
Some points for the success of
ATCS systems in India:
Most cities in India aim for an
integrated command and control center,
an integration of all sub-systems. ATCS
systems are to provide an interface
to export data to other systems for
developing specific applications or
intelligence to meet various needs of
the authorities or end-users.
Learning from the past, for any

28 February - March ’19 / TrafficInfraTech www.trafficinfratech-com-500653.hostingersite.com