
    Given a sequence of existing delivery routes and a newly designated traffic monitoring checkpoint, modify the delivery fleet's routing system by incorporating the checkpoint before each existing route segment. Design a function that takes the list of current routes and the mandatory checkpoint location, then returns an updated routing sequence where drivers must pass through the checkpoint before proceeding to each originally planned route segment.
    

    
def insert_element(list, element):
    """
    Given a sequence of existing delivery routes and a newly designated traffic monitoring checkpoint, modify the delivery fleet's routing system by incorporating the checkpoint before each existing route segment. Design a function that takes the list of current routes and the mandatory checkpoint location, then returns an updated routing sequence where drivers must pass through the checkpoint before proceeding to each originally planned route segment.
    

    """
def insert_element(list, element):
    """
    Given a sequence of existing delivery routes and a newly designated traffic monitoring checkpoint, modify the delivery fleet's routing system by incorporating the checkpoint before each existing route segment. Design a function that takes the list of current routes and the mandatory checkpoint location, then returns an updated routing sequence where drivers must pass through the checkpoint before proceeding to each originally planned route segment.
    

    """
    list = [v for elt in list for v in (element, elt)]
    return list