Page 45 - TrafficInfratech Magazine Feb - Mar 2020

ITS

controllers on our traffic junctions signal priority for emergency
were first generation pre timed service vehicles (ESV) such as
Indian market controllers. The pre-timed ambulances and firefighting
controllers fail to respond to the
vehicles is being realized by the
for Intelligent fluctuating traffic demand since no city authorities. Since the cities are
Transportation System feedback mechanism is involved to already congested an ambulance
assess the real-time traffic.
caught in the RED signal during
(ITS) is expected The Adaptive Traffic Control the peak-hour often risk the life
to grow rapidly Systems operate in two levels (i) of the patient inside the vehicle
as the delay encountered at the
the traffic signal controllers, vehicle
due to the growing detectors and other street furniture traffic junction is significant.
urbanization and also installed at every traffic junction The current practice is to clear
the ambulance through manual
and (ii) the data acquisition system,
because of the various user management application intervention that generally
programs promoted and the ATCS engine (signal time creates confusion at the junction.
The efficient way of clearing an
optimization algorithm) running
by the governments. at a server class machine at the ESV at the traffic junction is to
This, in fact, has Traffic Management and Control establish vehicle (ambulance)
to infrastructure (traffic signal
(TMC) station. The traffic junctions
opened up enormous are networked to the TMC over controller) communication (V2I)
opportunities for new an appropriate communication at a safe distance and provide
medium (dedicated fiber, Managed
priority GREEN signal for the ESV
business models says Leased Line Network, 3G/4G) by the time it reaches the traffic
Dr. P Ravikumar, Ph.D for assessing the real-time traffic junction. This is effective even
(IIT Bombay), Senior pattern in the control area and during peak-hour traffic since the
updating optimum signal timings
priority signal will start flushing
Consultant, CDAC to the traffic junctions. the traffic accumulated in the
Red-light enforcement and
Thiruvananthapuram speed limit enforcement are other direction of the ESV before it
reaching the junction.
markets recently opened under The ESV can negotiate through
the ITS. Both these enforcement the moving traffic. The ESV
systems use vehicle detection priority system requires GPS
equipment, ANPR (Automatic inside the vehicle for identification
Number Plate Recognition) camera, of its coordinates and heading
IR illuminator and video camera. direction and, a radio equipment
Tamperproof digital evidences are to send these information to the
provided by both the system for traffic signal controller. The traffic
easy enforcement. Video analytics, signal controller on receiving
Artificial Intelligence (AI), Machine the coordinates of the ESV shall
Learning (ML) and Deep Learning prepare for the priority GREEN
(DL) techniques are widely used signal by gracefully terminating
in enforcement systems such as the currently running Signal Phase
ANPR, Helmet detection, Seatbelt and, provide right-of-way for the
utilization of urban roads, improved detection. They are also used for ESV by the time it reaches the
travel time and reduced congestion incident detection, identification traffic junction. The traffic signal
levels. ATCS are the latest of unattended objects at shall resume to normal operation
generation of traffic management public places, face recognition, as soon as the ESV exits the
systems that respond to changes unauthorized parking, wrong-way junction. A Hooter also is required
in traffic patterns in real-time in a driving, etc. This is a huge market at the traffic junction to alert the
road traffic network. Traditionally, for solution providers. road users well in advance on the
till recent time, all traffic signal Importance for providing arrival of the ESV.

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