
    Design a function for a smart parking system that determines the largest zone size (which must be a power of 2) that can be allocated within a parking facility containing n spaces, enabling efficient space organization for different vehicle categories. The zone size must be less than or equal to the total available spaces n, ensuring optimal use of the parking facility's capacity.
    

    
def highest_Power_of_2(n):
    """
    Design a function for a smart parking system that determines the largest zone size (which must be a power of 2) that can be allocated within a parking facility containing n spaces, enabling efficient space organization for different vehicle categories. The zone size must be less than or equal to the total available spaces n, ensuring optimal use of the parking facility's capacity.
    

    """
def highest_Power_of_2(n):
    """
    Design a function for a smart parking system that determines the largest zone size (which must be a power of 2) that can be allocated within a parking facility containing n spaces, enabling efficient space organization for different vehicle categories. The zone size must be less than or equal to the total available spaces n, ensuring optimal use of the parking facility's capacity.
    

    """
    res = 0
    for i in range(n, 0, -1):
        if i & i - 1 == 0:
            res = i
            break
    return res