The document describes a density based traffic control system that uses IR sensors to measure vehicle density on different sides of an intersection. A microcontroller is interfaced with the sensors and controls the traffic lights based on the detected densities, giving higher priority to sides with higher vehicle density. This allows traffic to clear more efficiently without unnecessary delays even if one side has no traffic.

1. DENSITY BASED TRAFFIC CONTROL SYSTEM
AIM:
The main objective of this project is to control the traffic lights based on
the density of the vehicles.
DESCRIPTION:
In this system IR sensors are used to measure the density of the vehicles which
are fixed within a fixed distance. All the sensors are interfaced with the microcontroller
which in turn controls the traffic signal system according to density detected by the
sensors.
If the traffic density is high on particular side more priority is given for that side.
The sensors continuously keep sensing density on all sides and the green signal is given
to the side on priority basis, where the sensors detect high density. The side with next
priority level follows the first priority level.
By using this system traffic can be cleared without irregularities and time delays
even though there is no traffic on the other side can be avoided.
BLOCK DIAGRAM
89C51
IR - E
LCD
IR-W
Traffic signal
lights
IR-N
IR -S

2. SOFTWARE:
Embedded C
TOOLS USED:
KEIL uvision2 IDE
HARDWARE:
1. PCB for micro controllers
2. 8051 controller,
3. DB9 Connectors
4. IR sensor pairs
5. Red, green LED’s
6. 11.0592 MHz quartz crystal,
7. Resistors, Capacitors