better

src/BridgeSimulator.java

@@ -19,20 +19,16 @@ public class BridgeSimulator {
             emergencyTimes.add(rand.nextInt(simulationTime - 1));
 
         int currentSimTime = 0;
-        long lastTime = System.currentTimeMillis();
-        long currentTime;
 
         System.out.println("Simulation starts for " + simulationTime + " seconds with " + emergencies + " emergency vehicles prioritized.");
         while (currentSimTime <= simulationTime) {
-            currentTime = System.currentTimeMillis();
-
-//            if (currentTime - lastTime > 1)
-//            {
-//                trafficController.addVehicle();
-//                lastTime = currentTime;
-//            }
+            int totalVehicles = trafficController.carCounter + trafficController.truckCounter;
 
+            for (int i = 0; i < 3 && totalVehicles < 50; i++) {
                 trafficController.addVehicle();
+                totalVehicles = trafficController.carCounter + trafficController.truckCounter;
+            }
+
 
             Integer timeToRemove = null;
             for (Integer time : emergencyTimes) {
@@ -49,10 +45,6 @@ public class BridgeSimulator {
 
             if (!trafficController.queue.isEmpty())
                 currentSimTime += trafficController.allowVehicle();
-
-//            System.out.println(currentSimTime);
-
-//            trafficController.printQueue();
         }
 
         int totalVehicles = trafficController.carCounter + trafficController.emergencyCounter + trafficController.truckCounter;
@@ -60,7 +52,5 @@ public class BridgeSimulator {
         System.out.println("\nSimulation concludes after " + simulationTime + " seconds.");
         System.out.println("Total Vehicles: " + totalVehicles + ", Cars: " + trafficController.carCounter + ", Trucks: " + trafficController.truckCounter + ", Emergency Vehicles: " + trafficController.emergencyCounter + ", Vehicles Crossed: " + trafficController.crossings);
         System.out.println(trafficController.left + " turned away due to excessive wait times.");
-
     }
-
 }

src/TrafficController.java

@@ -1,5 +1,4 @@
 import java.util.*;
-import java.util.Random;
 import java.util.concurrent.Semaphore;
 
 public class TrafficController {
@@ -10,6 +9,7 @@ public class TrafficController {
     public int crossings = 0;
     public int left = 0;
 
+    boolean carLast = false;
     boolean northLast = true;
 
     LinkedList<Vehicle> queue = new LinkedList<>();
@@ -32,13 +32,13 @@ public class TrafficController {
     }
 
     Vehicle generateVehicle() {
-        Random rand = new Random();
-        int r = rand.nextInt(2);
-
-        if (r == 0) {
-            return new Truck(truckCounter++ + 1);
-        } else {
+        if (carLast)
+        {
+            carLast = false;
             return new Car(carCounter++ + 1);
+        } else {
+            carLast = true;
+            return new Truck(truckCounter++ + 1);
         }
     }
 

src/Vehicle.java

@@ -37,16 +37,6 @@ public abstract class Vehicle implements Runnable {
             System.out.println(this.getType() + " " + id + " saw too many cars and left.");
             trafficController.left++;
         }
-
-
-//
-//        try {
-//
-//
-//        } catch (InterruptedException e) {
-//            e.printStackTrace();
-//            System.out.println(this.getType() + " " + id + " saw too many cars and left.");
-//        }
     }
 
     public void leave(TrafficController trafficController) {