intelligent traffic pre-emptive system

8/13/2019 Intelligent Traffic Pre-emptive System

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INTELLIGENT TRAFFIC PRE-EMPTIVE SYSTEM AND FLOW

CONTROLLER

ABSTRACT

With increase in vehicles population in cities and conversion of ruler India into urban towns traffic

related problems are rising in alarming way in India. Not only in India but a problem exists in entire

world including developed countries like U.S.A (in all major cities newyork, wastion, boston etc.), U.K

(in London).

To tackle these problems there is need for intelligent traffic pre-emptive system and flow

controller so we are proposing intelligent traffic pre-emptive system and flow controller in this

proposal based on ATxmega128A1. Design and application are explained in next few sections.


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Atmel India university competition 2013

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CONTENTS

Certificate of original work .....2

Introduction .....4

Intelligent traffic pre-emptive system and flow controller .....5

Traffic pre-emptive system .....7


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INTRODUCTION

Traffic jams in the city cost Delhiites Rs 10 crore and the government exchequer Rs 1.5 crore per day,

reveals a survey by Centre for Transforming India (CTI). Its not only Delhi but all major cities are facing

traffic related challenges. India inquired a loss of Rs 600bn ($10.8bn) a year due to congestion, slow

speed of freight and waiting time at traffic signal, toll plazas and check points.

Beijing London

Delhi Washington

How problem may can trickled

By properly designing junctions: Junction in cities can be designed in such a way thattraffic of city can be scatted in all direction equally.

But above solution can be implemented only in new developing parts of a city butredevelopment of junction in old parts of city is very costly because lot of infrastructure is

need to be redeveloped.

Using intelligent traffic pre-emptive system and flow controller: System uses amicrocontroller to take decision how traffic should be allowed to move for efficient

utilization of time.

System can be installed in any place easily do not require much space but

required promising hardware and carefully designed software.


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INTELLIGENT TRAFFIC PRE-EMPTIVE SYSTEM AND FLOW CONTROLLER

Traffic pre emptive system help to evacuate emergency vehicles like (Ambulance, Fire brigad trucks,

and rescue team vehicles) and defence related operations so no delay is faced by these critical sectors.

And traffic flow convertor to intelligently guide traffic

Thus, system can be divided into two parts

Traffic flow controller Traffic pre-emptive system

INTELLIGENT TRAFFIC FLOW CONTROLLER

Traffic movement across a junction can be made fast by intelligent flow controller. System work on

simple algorithmit scan all road meeting junction (near signal).System detect vehicle crowd on each

road around junction and vehicles on most crowded route is allowed to move first so number of

vehicles waiting for green signal reduce significantly.

To monitor traffic any transducer or a camera can be used. Each vehicles crossing detector increase

counter and according to status of number of vehicles signal is switched.


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Flow chart:

If vehicles on particular road wait for more than 7 minute then signal corresponding to that road is

given highest priority.

Start

Turn on vehicle

detector

Compare crowed on

each road

Wait for

vehicles to

pass

Turn signal green

corresponding to max

crowded road

Increase counter

Check status of each road

Using last few minute data


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TRAFFIC PRE EMPTIVE SYSTEM

Traffic signal pre-emption is defined as the transfer of normal operation of a traffic control signal to a

special control mode of operation. Pre-emptive control is designed and operated to give the most

important classes of vehicles the right of way at and through a signal. This right of way is usually

achieved with a green indication on the approach of the vehicle requesting pre-emption. Pre-emptivecontrol may be given to trains, boats, emergency vehicles, and light rail transit. It is commonly used for

fire engines because the size of their vehicles makes them less able to move through traffic without the

aid of pre-emption.

Signal pre-emption controls the movement of traffic that is of greater importance than general

vehicle and pedestrian traffic. Pre-emptive control is necessary to avoid collisions (e.g., trains versus

automobiles) and/or give right of way to vehicles in an emergency situation (e.g., fire engines

responding to an emergency).

Several types of technologies are available to detect vehicles requesting pre-emption , and include the

use of light (strobe), sound (siren), pavement loops, radio transmission, and push buttons approaching

an intersection, to request immediate service (green indication from the signal).

Traffic Pre-emptive system can be designed on microcontroller based system which contact

approaching vehicle any radio (zigbee is preferred due to auto healing and auto routing ability) and

clear the road before vehicle reach junction. Step with occurs in series for pre-emption of road when

emergency vehicle reach junction are explained in flow graph on next page.


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Radio at junction get signalFrom vehicles radio

Signal radio gives acknowledgment

Of reception

Request for GPS co-ordination of

Vehicles is send form signal radio

Co-ordinate of vehicle is send inResponse of request

Co-ordinate of vehicle is matchedwith Memory mapped coordinate

Co-ordinate of vehicle is matchedwith Memory mapped coordinate

Match found turn signal greencrossponding to road on which

vechicle is present is turned green

IF

Match foundRequest for GPS coordination of

Vehicles is send form signal radio

intelligent traffic pre-emptive system

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