int readpin1=6;
int readpin2=9;
int dt=500;
int j;
int yellowTime=3;
int redTime=5;
void setup() {
  // put your setup code here, to run once:
pinMode(readpin1, OUTPUT);
pinMode(readpin2, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
for(j=1;j<=redTime;j=j+1){
digitalWrite(readpin1, HIGH);
delay(dt);
digitalWrite(readpin1, LOW);
delay(dt);

}
for(j=1;j<=yellowTime;j=j+1){
digitalWrite(readpin2, HIGH);
delay(dt);
digitalWrite(readpin2, LOW);
delay(dt);

}
}