TRAFFIC INFORMATION SERVICE BASED ON VEHICLE AD-

HOC NETWORK

Introduction:

The monitoring and control of city traffic is becoming a major problem in many

countries. With the ever increasing number of vehicles on the road, the Traffic Monitoring

Authority has to find new methods of overcoming such a problem. We propose a traffic

information service for which traffic data are collected over ad-hoc networks from neighbor

vehicles, processed to minimize the data size, and eventually provided to its destination. The

proposed scheme simply relies on the existing navigation systems in vehicles and wireless

communication devices for vehicle-to-vehicle communication, rather than on a separately

established server. It allows collecting and analyzing traffic status of large areas without

incorporating separated monitoring systems, e.g., probe cars and enables to provide accurate

traffic information to drivers in timely manner.

Existing System:

Present Traffic Light Controllers (TLC) is based on microcontroller and microprocessor.

These TLC have limitations because it uses the pre-defined hardware, which is functioning

according to the program that does not have the flexibility of modification on real time basis.

Due to the fixed time intervals of green, orange and red signals the waiting time is more and car

uses more fuel.

Proposed System:

This project “Intelligent traffic controller” makes use of Networks along with Embedded

Technology. Thus, optimization of traffic light control increases road capacity and traffic flow,

and can prevent traffic congestions. This is a unique feature of this project which is very useful

to car drivers to take an alternate route in case of congestion.

The main objective for this project is to design a program and implement hardware of

intelligent traffic light system suitable for real life implementations. This project also aims to

design a safe and efficient traffic flow, to assign the right way and minimizes the delay or

waiting time at road. The information about congestion on road or possible alternate routes can

also be informed to car drivers through information collecting centre.

The service scenario is as follows: (1) Vehicle C is on the way to the destination; (2)

Vehicle A has met with jammed area. Since vehicle A went through the jammed area, it has

obtained the traffic information and update that in the information collecting centre (3) Vehicle B

hasn’t met with any traffic jam in its way. The traffic information that vehicle B has obtained is

likely to be normal since it did not pass through the jammed area, it has obtained the traffic

information and update that in the information collecting centre (4) Vehicle A, B, and C

regularly transmit the traffic information on their respective paths; (5) If information collecting

devices are incorporated on the road, they can serve to retrieve, process, and regularly transmit

the traffic information to users; (6) Based on the delivered information from vehicle A and B,

vehicle C can be aware of the traffic jam on the path of vehicle A in advance; and thus, (7)

Vehicle A can choose the right path avoiding the heavy traffic.

BLOCK DIAGRAM:

CAR A:

8051

Micro

Controller

Power

Supply

Key for Traffic

Intimation

MAX

232 Zigbee

LCD

CAR B:

CAR C:

8051

Micro

Controller

Power

Supply

Key for Traffic

Intimation MAX

232

Zigbee

LCD

8051

Micro

Controller

Power

Supply

Key for Traffic

Intimation MAX

232

Zigbee

LCD

Information Collecting Device:

Hardware Requirements:

8051 microcontroller unit.

Zigbee

LCD.

Max 232.

Software Requirements:

Embedded C

Keil C Compiler

Advantages:

Easy to implement

Effectively Reduces the traffic congestion.

8051

Micro

Controller

Power

Supply

MAX

232

Zigbee