
    In a delivery fleet's traffic management system, write a function that takes a vehicle's current identification number and finds the next available ID number that reads the same forwards and backwards, enabling efficient bi-directional route tracking. The function should return this new symmetrical ID number, which must be larger than the current ID but as close as possible to it, to maintain the fleet's sequential numbering system.
    

    
import sys

def next_smallest_palindrome(num):
    """
    In a delivery fleet's traffic management system, write a function that takes a vehicle's current identification number and finds the next available ID number that reads the same forwards and backwards, enabling efficient bi-directional route tracking. The function should return this new symmetrical ID number, which must be larger than the current ID but as close as possible to it, to maintain the fleet's sequential numbering system.
    

    """
import sys

def next_smallest_palindrome(num):
    """
    In a delivery fleet's traffic management system, write a function that takes a vehicle's current identification number and finds the next available ID number that reads the same forwards and backwards, enabling efficient bi-directional route tracking. The function should return this new symmetrical ID number, which must be larger than the current ID but as close as possible to it, to maintain the fleet's sequential numbering system.
    

    """
    numstr = str(num)
    for i in range(num + 1, sys.maxsize):
        if str(i) == str(i)[::-1]:
            return i