
    Given a fleet of vehicles with their sensor readings, find the ID of the vehicle that requires the most urgent maintenance based on their maintenance urgency scores. Each vehicle's data is represented as a tuple containing its ID and maintenance urgency score, where lower scores indicate higher maintenance priority.
    

    
from operator import itemgetter

def index_minimum(test_list):
    """
    Given a fleet of vehicles with their sensor readings, find the ID of the vehicle that requires the most urgent maintenance based on their maintenance urgency scores. Each vehicle's data is represented as a tuple containing its ID and maintenance urgency score, where lower scores indicate higher maintenance priority.
    

    """
from operator import itemgetter

def index_minimum(test_list):
    """
    Given a fleet of vehicles with their sensor readings, find the ID of the vehicle that requires the most urgent maintenance based on their maintenance urgency scores. Each vehicle's data is represented as a tuple containing its ID and maintenance urgency score, where lower scores indicate higher maintenance priority.
    

    """
    res = min(test_list, key=itemgetter(1))[0]
    return res