
    Write a function that determines the length of the longest street name or route identifier in the delivery fleet's navigation database, helping dispatchers identify complex waypoints that may require additional routing considerations. The function should process a list of street names and route identifiers, returning the character count of the longest entry to assist in route optimization and display formatting.
    

    
def len_log(list1):
    """
    Write a function that determines the length of the longest street name or route identifier in the delivery fleet's navigation database, helping dispatchers identify complex waypoints that may require additional routing considerations. The function should process a list of street names and route identifiers, returning the character count of the longest entry to assist in route optimization and display formatting.
    

    """
def len_log(list1):
    """
    Write a function that determines the length of the longest street name or route identifier in the delivery fleet's navigation database, helping dispatchers identify complex waypoints that may require additional routing considerations. The function should process a list of street names and route identifiers, returning the character count of the longest entry to assist in route optimization and display formatting.
    

    """
    max = len(list1[0])
    for i in list1:
        if len(i) > max:
            max = len(i)
    return max