Density Based Traffic System with emergency override Project Code

#include <LiquidCrystal.h>
LiquidCrystal lcd(45,44,49, 48, 47,46);
//pedestrianledpins
const intled1=23;
const intled2=25;
const intled3=27;
const intled4=29;
//pedestrianledbuttons
const intbutton_lane1=22;
intstate1;
intstate2;
intstate3;
intstate4;
//ledpinsforlane 1
const intred1=2;

const intyellow1=3;
const intgreen1=4;
//ledpinsforlane 2
const intred2=5;
const intyellow2=6;
const intgreen2=7;
//ledpinsforlane 3
const intred3=8;
const intyellow3=9;
const intgreen3=10;
//ledpinsforlane 4
const intred4= 11;
const intyellow4=12;
const intgreen4=13;
//irsensorspinforlane 1
intir_lane1_a=30 ;
intir_lane1_b=31 ;

intir_lane2_a=32 ;
intir_lane2_b=33 ;
intir_lane3_a=40;
intir_lane3_b=41;
intir_lane4_a=42;
intir_lane4_b=43;
intreadsen1a;
intreadsen1b;
intreadsen2a;
intreadsen2b;
intreadsen3a;
intreadsen3b;
intreadsen4a;
intreadsen4b;
intlane;
voidsetup()
{

lcd.begin(16,2);
//LED pinsetupfor lane 1
pinMode(red1,OUTPUT);
pinMode(yellow1,OUTPUT);
pinMode(green1,OUTPUT);
//LED pinsetupforlane 2
//IR pinsetupforlane 1
pinMode(ir_lane1_a,INPUT);

pinMode(ir_lane1_b,INPUT);
//IRpinsetupfor lane 1
// pedestrianpinsetupforlane1
pinMode(button_lane1,INPUT);
pinMode(led1,OUTPUT);

Serial.begin(9600);
}
voidloop()
{
if(Serial.available()>0)
{
emergency();
}
overide();

//1
digitalWrite(led1,LOW);
digitalWrite(red1,LOW);
digitalWrite(yellow1,LOW);
digitalWrite(green1,HIGH);
digitalWrite(red2,HIGH);
digitalWrite(green2,LOW);
delay(5000);
{
emergency();
}

overide();
pedes1();
pedes2();
pedes3();
pedes4();
//2
digitalWrite(yellow1,HIGH);

delay(3000);
{
emergency();
}
overide();
pedes1();
pedes2();
pedes3();
pedes4();
//3

delay(5000);
{
emergency();
}
overide();
pedes1();
pedes2();
pedes3();
pedes4();
//4

delay(3000);
{
emergency();
}
overide();
pedes1();
pedes2();
pedes3();
pedes4();

//5
delay(5000);
{
emergency();
}
overide();

pedes1();
pedes2();
pedes3();
pedes4();
//6
delay(3000);

{
emergency();
}
overide();
pedes1();
pedes2();
pedes3();
pedes4();
//7

delay(5000);
{
emergency();
}
overide();
pedes1();
pedes2();
pedes3();
pedes4();
//8

delay(3000);
{
emergency();
}
overide();
pedes1();
pedes2();
pedes3();
pedes4();
}

voidemergency()
{
lane=Serial.read();
if(lane=='1')
{
lcd.begin(16,2);
lcd.print("emergencyinL1");
delay(2000);

delay(12000);
lcd.clear();

delay(2000);
}
if(lane=='2')
{
lcd.begin(16,2);
delay(2000);

delay(12000);
lcd.clear();
delay(2000);

}
if(lane=='3')
{
lcd.begin(16,2);
delay(2000);

delay(12000);
lcd.clear();
delay(2000);
}

if(lane=='4')
{
lcd.begin(16,2);
delay(2000);

delay(12000);
lcd.clear();
delay(2000);
}

if(lane=='0')
{
lcd.print("lane 1");
}
}
voidoveride()
{
readsen1a=digitalRead(ir_lane1_a);
readsen1b=digitalRead(ir_lane1_b);

if(readsen1a==HIGH|| readsen1b==HIGH||readsen2a==HIGH|| readsen2b==HIGH
||readsen3a==HIGH|| readsen3b==HIGH||readsen4a==HIGH|| readsen4b==HIGH)
{
if(readsen1b==HIGH)
{
delay(10000);

{
emergency();
}
}
if(readsen1a==HIGH)
{
delay(5000);

{
emergency();
}
}
if(readsen2b==HIGH)
{

delay(10000);
{
emergency();
}
}
if(readsen2a==HIGH)
{
delay(5000);

{
emergency();
}
}
if(readsen3b==HIGH)
{
delay(10000);

{
emergency();
}
}
if(readsen3a==HIGH)
{
delay(5000);
{

emergency();
}
}
if(readsen4b==HIGH)
{
delay(10000);

{
emergency();
}
}
if(readsen4b==HIGH)
{
delay(5000);

{
emergency();
}
}
}
}
voidpedes1()
{
state1=digitalRead(button_lane1);
if(state1==1)
{
lcd.begin(16,2);
lcd.print("pedestrianbusy");
lcd.scrollDisplayLeft();

digitalWrite(led1,HIGH);
delay(5000);
lcd.clear();
}
else
}
voidpedes2()

{
if(state2==1)
{
lcd.begin(16,2);
delay(5000);

lcd.clear();
}
else
}
voidpedes3()
{
if(state3==1)
{
lcd.begin(16,2);

delay(5000);
lcd.clear();
}
else
}
voidpedes4()
{
if(state4==1)
{
lcd.begin(16,2);

delay(5000);
lcd.clear();
}
else
}

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Density Based Traffic System with emergency override Project Code