Intellegent Traffic Light Control System for Isolated Intersection Using Fuzzy Logic

Road traffic is becoming a major problem in many countries. The increasing number of vehicles is very bad to lower number of roads. But some of them are try to get a answer for this problem. They found some answer for it.

The research article “Intellegent Traffic Light Control System for Isolated Intersection Using Fuzzy Logic’’ was written by three people Javed Alam, Prof.(Dr) M.K.Pandey, Husain Ahemed. They use fuzzy logic to slove this problem. By using Fuzzy logic traffic control they try to get following results.

• ·         Improving of traffic safety in the intersection.
• ·         Maximizing the capacity of the intersection.
• ·         Minimizing the delays.
• ·         Clarifying the traffic environment.
• ·         Influencing the route choices.

Methodology

In here they get a junction is an isolated four-way junction with traffic coming from the north, west, south and east directions. As well as they didn’t considered right and left turns in this system. And a fuzzy logic controller was designed for an isolated 4-lane traffic intersection. In the traffic lights controller two fuzzy input variables are chosen: the quantity of the traffic on the arrival side (Arrival) and the quantity of traffic on the queuing side (Queue).

Fuzzy parameters and their membership functions design

For the traffic lights control, there are five membership functions (Very-Short, Short, Medium, Large, Very-Large) for each of the input and there are four output (Zero, Short, Medium, Large) fuzzy variable of the system.

Fuzzy rule set

Then they design a fuzzy logic rule set by using that membership functions. These rule set helps to get the final solution for this problem.

Defuzzification

Defuzzification is the process that converts fuzzy output values back to the crisp values. Then they get the final result and apply that for the junction. The output value of this process is related to how much extension time add to that lane.

I think the authors found a good solution for modern day traffic in the four way junction. It is a perfect decision to use fuzzy logic to this system.  we can get a good knowledge for our project.

Reference:

Javed Alam, Prof.(Dr) M.K.Pandey, Husain Ahemed, "Intellegent Traffic Light Control Systemfor Isolated Intersection Using Fuzzy Logic ", Conferance on Advances in Communication and Control Systems 2013 (CAC2S 2013)