
    Calculate the total distance that needs to be covered by traffic sensors around a square intersection zone to ensure complete perimeter monitoring, given the length of one side of the intersection in meters. The perimeter measurement is crucial for installing a continuous chain of traffic sensors that will collect real-time data for optimizing traffic flow at the intersection.
    

    
def square_perimeter(a):
    """
    Calculate the total distance that needs to be covered by traffic sensors around a square intersection zone to ensure complete perimeter monitoring, given the length of one side of the intersection in meters. The perimeter measurement is crucial for installing a continuous chain of traffic sensors that will collect real-time data for optimizing traffic flow at the intersection.
    

    """
def square_perimeter(a):
    """
    Calculate the total distance that needs to be covered by traffic sensors around a square intersection zone to ensure complete perimeter monitoring, given the length of one side of the intersection in meters. The perimeter measurement is crucial for installing a continuous chain of traffic sensors that will collect real-time data for optimizing traffic flow at the intersection.
    

    """
    perimeter = 4 * a
    return perimeter