
    Write a function that converts delivery route parameter names from the legacy traffic monitoring system's snake_case format to the new fleet management software's camelCase format. The function should handle any route identifier or traffic parameter string containing lowercase letters and underscores, ensuring seamless data integration between the two systems.
    

    
import re

def snake_to_camel(word):
    """
    Write a function that converts delivery route parameter names from the legacy traffic monitoring system's snake_case format to the new fleet management software's camelCase format. The function should handle any route identifier or traffic parameter string containing lowercase letters and underscores, ensuring seamless data integration between the two systems.
    

    """
import re

def snake_to_camel(word):
    """
    Write a function that converts delivery route parameter names from the legacy traffic monitoring system's snake_case format to the new fleet management software's camelCase format. The function should handle any route identifier or traffic parameter string containing lowercase letters and underscores, ensuring seamless data integration between the two systems.
    

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