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density based traffic light controller
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DENSITY BASED TRAFFIC LIGHT CONTROLLER
PRESENTED BY:-
ANSHITA AGRAWAL
FARHEEN SIDDIQUI
NIKITA GUPTA
PURNIMA TIWARI
INTRODUCTION
Day by day increasing population increases traffic and vehicles also which
causes problems in transportation and management of traffic.
Mainly traffic controls at the crossings requires smart traffic signaling
system which has high degree of flexibility according to the flow of traffic in
auxiliary roads.
On crossing some roads have a high density of traffic which requires rapid
release of traffic to maintain the smooth flow of traffic on busy roads as well
the idea of saving time when the traffic is low.
In this project we develop a system which senses the traffic density on a
particular road and change the Green signal duration accordingly. Here we
use IR sensors fitted along the road side to detect the presence of vehicles and
change the signal according to the traffic density.
This is a simple and effective solution for traffic busy crossing to control
automatically the flow of traffic without disturbing the auxiliary roads.
CONTINUED…
START
FIRST LANE STARTS FOR MINIMUM TIME
i.e. 10Sec
CHECK SENSORS OUTPUT OF THE CURRENT LANE
IF TRAFFIC
WAIT FOR 5Sec
SWITCH TO NEXT LANE
CONTINUE
HIGH
LOW
FLOW CHART
IF T IS MAX
i.e. 40sec
YES
NO
ROAD MAPLANE 1
LANE 2
LANE 3
LANE 4
IR SENSORSIR SENSORS
IR SENSORS IR SENSORS
T1: LANE1 ON
LANE 1
LANE 2LANE 4
LANE 3
IR SENSORSIR SENSORS
IR SENSORS IR SENSORS
T2: LANE2 ON
LANE 1
LANE 2LANE 4
LANE 3
IR SENSORSIR SENSORS
IR SENSORS IR SENSORS
T3: LANE3 ON
LANE 1
LANE 2LANE 4
LANE 3
IR SENSORS
IR SENSORSIR SENSORS
IR SENSORS
T4: LANE4 ON
WORKING EXAMPLE CYCLE:1
DIRECTION DENSITY TIME IN SECONDS
NORTH HIGH 40
EAST LOW 10
SOUTH LOW 10
WEST MEDIUM 20
DIRECTION DENSITY TIME IN SECONDS
NORTH MEDIUM 20
EAST LOW 10
SOUTH MEDIUM 30
WEST LOW 10
CYCLE:2
TIMING DIAGRAM
510 2015 25 30 35 4540 5550 6560 70 75 80
NORTH GREEN
NORTH RED
EAST GREEN
EAST RED
SOUTH GREEN
SOUTH RED
WEST RED
WEST GREEN
CYCLE:1
8590 10095 105 110 115 125120 135130 145140 150 155 160
NORTH GREEN
NORTH RED
EAST GREEN
EAST RED
SOUTH GREEN
SOUTH RED
WEST RED
WEST GREEN
CONTINUED…CYCLE:2
Since maximum time for each T is 40sec, so one round is complete in 160 seconds. But when we include density control concept our first round is completed in 80sec and second cycle is complete in 70sec. So we can save a considerable amount of time. This is the principle working of density based traffic light controller.
RESULT
Density of vehicles
No. of vehicles Red light on (in sec)
Green light on (in sec)
Low 10 30 10
Medium 20 60 20
High 30 120 40
OVERALL CONDTION
COMPONENTS USED
NAME OF COMPONENET
QUANTITY
MICROCONTROLLER 1
IR SENSORS 12
LED’s 8
POWER SUPPLY 1
BLOCK DIAGRAM:
REGULATEDPOWERSUPPLY
IR RECIEVER LED
MICROCONTROLLER
IR TRANSMITTER
APPLICATIONS
Traffic saturation points and crossings.
Used in heavy traffic areas.
Scope for advancement:
Using high quality sensors and close circuit cameras to collect the
density data for better management of traffic.
Easy to install.
Sensors are not affected by other RF or radiations.
Low power consumption.
Change time duration in steps.
Reducing Traffic congestion at major traffic lights.
Saves the Waiting Time.
Avoiding accidents to an extent caused due to act of
impatience
ADVANTAGES
REFRENCES
http://www.electronicshub.org/density-based-traffic-signal-system-using- microcontroller/
http://contest.techbriefs.com/2011/entries/transportation/1329
http://contest.techbriefs.com/2011/entries/transportation/1329
http://www.slideshare.net/nskprasad/density-based-trafiic-control
THANK YOU
