Sensor Lampu Jalan

#include <SoftwareSerial.h>
SoftwareSerial sim(2, 3);
int led = 8;
int sensorA1 = 13; //untuk membaca lampu A1
int sensorA2 = 12; //untuk membaca lampu A2
int sensorB1 = 11; //untuk membaca lampu B1
int sensorB2 = 10; //untuk membaca lampu B2

void setup (){

  Serial.begin(9600); // Inisialisasi Port serial
  sim.begin(115200); // Inisialisasi Port Sim
  pinMode(led, OUTPUT); // LED sebagai output
  pinMode(sensorA1, INPUT); //sensor ldr 1 input
  pinMode(sensorA2, INPUT); //sensor ldr 2 input
  pinMode(sensorB1, INPUT);
  pinMode(sensorB2, INPUT);

}

  void loop(){

delay(2000);

int ldrA1 = digitalRead(sensorA1); //baca sensor A1
int ldrA2 = digitalRead(sensorA2); // baca sensor A2
int ldrB1 = digitalRead(sensorB1); // baca sensor B1
int ldrB2 = digitalRead(sensorB2); // baca sensor B2

   Serial.print("Lampu A1 = ");
   Serial.println(ldrA1);
   delay(500);

   Serial.print("Lampu A2 = ");
   Serial.println(ldrA2);
   delay(500);

   Serial.print("Lampu B1 = ");
   Serial.println(ldrB1);
   delay(500);

   Serial.print("Lampu B2 = ");
   Serial.println(ldrB2);
   delay(500);

   if (ldrA1 > 0)
   {
    digitalWrite(led, HIGH);
    delay(100);
    digitalWrite(led, LOW);
    delay(100);
    digitalWrite(led, HIGH);
    delay(100);
    digitalWrite(led, LOW);
    delay(100);
   }
   if (ldrA2 > 0)
   {
    digitalWrite(led, HIGH);
    delay(100);
    digitalWrite(led, LOW);
    delay(100);
    digitalWrite(led, HIGH);
    delay(100);
    digitalWrite(led, LOW);
    delay(100);
   }
    if (ldrB1 > 0)
   {
    digitalWrite(led, HIGH);
    delay(100);
    digitalWrite(led, LOW);
    delay(100);
    digitalWrite(led, HIGH);
    delay(100);
    digitalWrite(led, LOW);
    delay(100);
   }
   if (ldrB2 > 0)
   {
    digitalWrite(led, HIGH);
    delay(100);
    digitalWrite(led, LOW);
    delay(100);
    digitalWrite(led, HIGH);
    delay(100);
    digitalWrite(led, LOW);
    delay(100);
   }
   else
   {
    digitalWrite(led, LOW);
   }

}