diff --git a/arduino code for traffic light b/arduino code for traffic light
new file mode 100644
index 00000000..94133a94
--- /dev/null
+++ b/arduino code for traffic light	
@@ -0,0 +1,72 @@
+int red = 9;
+int yellow = 8;
+int green = 7;
+
+void setup(){
+  
+  pinMode(red, OUTPUT);
+  pinMode(yellow, OUTPUT);
+  pinMode(green,  OUTPUT);
+  
+}
+void loop(){
+digitalWrite(red, HIGH);
+ delay(15000);
+digitalWrite(red,  LOW);
+  
+  digitalWrite(yellow, HIGH);
+delay(1000);
+  digitalWrite(yellow,  LOW);
+delay(500);
+
+  digitalWrite(yellow, HIGH);
+delay(1000);
+  digitalWrite(yellow,  LOW);
+delay(500);
+
+  digitalWrite(yellow, HIGH);
+delay(1000);
+  digitalWrite(yellow,  LOW);
+delay(500);
+  
+  digitalWrite(yellow, HIGH);
+delay(1000);
+  digitalWrite(yellow, LOW);
+delay(500);
+  
+  digitalWrite(yellow, HIGH);
+delay(1000);
+  digitalWrite(yellow, LOW);
+delay(500);
+  
+digitalWrite(green, HIGH);
+delay(20000);
+digitalWrite(green,  LOW);
+//  
+digitalWrite(yellow, HIGH);
+delay(1000);
+  digitalWrite(yellow,  LOW);
+delay(500);
+
+  digitalWrite(yellow, HIGH);
+delay(1000);
+  digitalWrite(yellow,  LOW);
+delay(500);
+
+  digitalWrite(yellow, HIGH);
+delay(1000);  
+  digitalWrite(yellow, LOW);
+delay(500);
+  
+  digitalWrite(yellow, HIGH);
+delay(1000);
+  digitalWrite(yellow, LOW);
+delay(500);
+  
+  digitalWrite(yellow, HIGH);
+delay(1000);
+  digitalWrite(yellow, LOW);
+delay(500);
+  
+  
+}