public void createVehicles(int numVehicles){
		ArrayList<Vehicle> v= Vehicle.getVehicleArray();
		for(int k=0; k<numVehicles; k++){
			double number= Math.random()*4;
			if(number>=0 && number<1)
				v.add(new Car(this));
			if(number>=1 && number<2)
				v.add(new Ambulance(this));
			if(number>=2 && number<3)
				v.add(new Bus(this));
			if(number>=3 && number<=4)
				v.add(new Bicycle(this));
		}
	}