
    Given a list of delivery route pairs, where each pair contains traffic density and estimated delivery time metrics, find the maximum efficiency score among all possible route combinations, where the efficiency score is calculated as the absolute product of the paired metrics. The efficiency score helps determine the most impactful route combination during peak delivery hours.
    

    
def max_product_tuple(list1):
    """
    Given a list of delivery route pairs, where each pair contains traffic density and estimated delivery time metrics, find the maximum efficiency score among all possible route combinations, where the efficiency score is calculated as the absolute product of the paired metrics. The efficiency score helps determine the most impactful route combination during peak delivery hours.
    

    """
def max_product_tuple(list1):
    """
    Given a list of delivery route pairs, where each pair contains traffic density and estimated delivery time metrics, find the maximum efficiency score among all possible route combinations, where the efficiency score is calculated as the absolute product of the paired metrics. The efficiency score helps determine the most impactful route combination during peak delivery hours.
    

    """
    result_max = max([abs(x * y) for (x, y) in list1])
    return result_max