
    Calculate the total boundary distance of a square-shaped delivery zone when given the length of one border segment, enabling fleet managers to determine the complete perimeter they must monitor for traffic conditions and route optimization.
    

    
def square_perimeter(a):
    """
    Calculate the total boundary distance of a square-shaped delivery zone when given the length of one border segment, enabling fleet managers to determine the complete perimeter they must monitor for traffic conditions and route optimization.
    

    """
def square_perimeter(a):
    """
    Calculate the total boundary distance of a square-shaped delivery zone when given the length of one border segment, enabling fleet managers to determine the complete perimeter they must monitor for traffic conditions and route optimization.
    

    """
    perimeter = 4 * a
    return perimeter