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Traffic Light Control Electronic Project using IC 4017 & 555 Timer

Traffic Light Control Simple Electronic Project

(Traffic Light Control Project Using IC 4017 Counter and Timer 555 )

Introduction

Traffic Lights are used to control the vehicular traffic. In the modern era, everyone has different types of vehicles resulting in rise to the numbers of vehicles. That’s why traffic lights are mandatory to avoid the traffic jams and accidents. There are three lights in the traffic signal, having different message for the drivers. Red light (upper one) asks the driver to yield at the intersection, green light (last one) gives the driver free license to drive through the intersection whereas the yellow light (middle one) alerts the driver to wait if the next light is red one or get ready to go / turn the engine ON if the green light is next.
Traffic light has proved to be an amazing way to stop the vehicular collisions and control the traffic jams in today’s modern era where everyone owns the different types of vehicles.Traffic Light Control Electronic Project using IC 4017 Counter & 555 Timer

Project Proposal:

As we all know, the name of the project is “Traffic Light Control”. The fundamental idea of this simple electronic project is to control the traffic. It can be used to avoid the vehicular collisions and traffic jams. This project is just a one-way traffic controller, although it can be further modified as well. Project will work in a way, it provides the instruction to the driver whether to drive through the intersection or yield at the intersection.

Control Lights indication:

There are three control lights or signals, which will provide the instruction to the driver.
  • RED light – instructs the driver to STOP at the intersection.
  • YELLOW light – instructs the driver to WAIT (If red light is next) or GET READY (if green light is next)
  • GREEN light – instructs the driver to GO through the intersection.

Components Requirements:

There are quite a few components, which we will be using to make our Traffic Light Control System. Following is the list of the components.
  1. 9V Battery (Input Battery)
  2. 100K, 22K and 330 ohm resistors
  3. 1µF, 10µF and 2.2mF capacitors
  4. Six 1N4148 diodes
  5. 555 timer IC (As a pulse generator)
  6. 4017 IC counter (Main IC of the circuit)
  7. 1M Potentiometer (Controls the timing of pulse generated by 555 timer)
  8. Red, yellow and green LEDs. (Output)

Circuit Diagram of Traffic Light Control  mini Project

Click image to enlarge
Traffic Light Control Electronic Project using IC 4017 Counter & 555 Timer

Working Principle:

This traffic light is made with the help of counter IC, which is mainly used for Sequential Circuits. We can also call it as Sequential Traffic Lights. Sequential Circuits are used to count the numbers in the series.
Coming to the working principle of Traffic Lights, the main IC is 4017 counter IC which is used to glow the Red, yellow and green LED respectively. 555 timer acts as a pulse generator providing an input to the 4017 counter IC. Timing of glow of certain lights totally depends upon the 555 timer’s pulse, which we can control via the Potentiometer so if you want to change the time of glow, you can do so by varying the potentiometer, having the responsibility for the timing. LEDs are not connected directly with 4017 counter, as the lights won’t be stable. We have used the combination of 1N4148 diodes and the LEDs in order to get the appropriate output. Main drawback of this circuit is that you can never have an exact timing with this, however you will have best estimated.

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27 comments

  1. thanks for the write up about trafic light control…please i need the conprehnesive note,the ways and proceduce to carry it out

  2. benjamin belga

    verry good idea. bravo

  3. Sir,
    I want a detail information about transformer.

  4. dereje feredegn

    I need detail information about active & passive component

  5. chandrakant verma

    Sir, the traffic light control system that I made by using ic 555 and 4017 in which glowing sequence and time interval isn’t so required. It is glowing very fast so, please tell me what should I do….??

  6. There are little mismatch between components in image and description. I laid out this project on electronics workbench and does not work.

  7. Can you give any offline software which help me to simulate electrical and electronics ckt and in which all components and all tools are available and which shows working condition of ckt and relay ,ldr and other coponents available

  8. i need a four ways trafic lightx crt that functns well

  9. Greetings Sir,
    I am interested in making this project with my school students tomorrow, but I only have one question – Can I use actual bulbs in place of LED? And for that I will need to input AC Current so that the bulbs light up.

    Can you please tell me, how can that be achieved. I will follow your design during making, kindly please instruct.

    With Regards

    • You can use triacs. Best bet is to isolate your control circuit (555 & 4017) after the diode with an opto isolstor. The outputs of the isolator will go to the gate of the triac. First find total load of lamps then size triac current rating just over load current. The triac voltage should be rated to withstand peak to peak voltage. A 120VAC peak to peak is about 177 volts, so a trick rated above that should be fine. Finally you need to work out gate current and I believe that should work. Modern signal lights use LEDs, but there are still many incandescent signal heads out there. Keep in mind that AC current can be lethal, so be sure to do this as safely as possible.

  10. Greetings Sir,
    I am interested in making this project with my GOVT POLYTECHNIC COLLEGE KULGAM KASHMIR J&K CLASSMATES tomorrow, but I only have one question – Can I use actual bulbs in place of LED? And for that I will need to input AC Current so that the bulbs light up.

    Can you please tell me, how can that be achieved. I will follow your design during making, kindly please instruct.

    With Regards

  11. If we want to glow three sets of leds at three different junctions what would be the circuit.

  12. Sir, I was given a mini project on traffic light controller. So can u show me clearly how connections are to be made?

  13. max cost ketli

  14. If your project is not working do the following: buy 10 N4148 diodes instead of 6. Wire them as following:
    1 tooth of the 4017 counter: connect using the diode to yellow led.
    2 tooth of the 4017 counter: connect using the diode to green led.
    (apply the instructions above to the list below)
    3 tth: green led.
    4 tth: green led.
    5 th: red led.
    6th: red.
    7th: green.
    8th: (as the drawing, connect to the ground wire).
    9th: red.
    10th: yellow.
    11th: red.

    This way, there are 4 states of green, 2 states of yellow and 4 states of red.

  15. is there any alternate to 4017 ic
    also can u give me the pcb layout of this circuit
    parkerleono@gmail.com

  16. I am trying to simulate the program using mikroC controller but still i observe problems may you provide to me the codes please

  17. ramatu koroma

    please i need the conclusion,limitation,and recommendation of this project

  18. where should we connect the potentiometer

  19. Anisha joyslin

    Where we have to connect the potentiometer

  20. i need the working of all the components..will you plzz……

  21. Hello,
    I wan to know if your establishment undertake traffic light control manually from an outstation.

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