
    Develop a function that transforms maintenance task identifiers in the transit system's database from snake case format to camel case format to ensure standardized reporting across the maintenance management system. The function should handle any valid maintenance task identifier string containing lowercase letters and underscores, converting it to a properly formatted camel case string without underscores.
    

    
import re

def snake_to_camel(word):
    """
    Develop a function that transforms maintenance task identifiers in the transit system's database from snake case format to camel case format to ensure standardized reporting across the maintenance management system. The function should handle any valid maintenance task identifier string containing lowercase letters and underscores, converting it to a properly formatted camel case string without underscores.
    

    """
import re

def snake_to_camel(word):
    """
    Develop a function that transforms maintenance task identifiers in the transit system's database from snake case format to camel case format to ensure standardized reporting across the maintenance management system. The function should handle any valid maintenance task identifier string containing lowercase letters and underscores, converting it to a properly formatted camel case string without underscores.
    

    """
    return ''.join((x.capitalize() or '_' for x in word.split('_')))