
    In a smart traffic management system, each intersection requires a palindromic ID number for bidirectional recognition, where the ID reads the same from both approaching directions. Given an existing intersection ID number, determine the next higher palindromic number that should be assigned to maintain this symmetric identification system.
    

    
import sys

def next_smallest_palindrome(num):
    """
    In a smart traffic management system, each intersection requires a palindromic ID number for bidirectional recognition, where the ID reads the same from both approaching directions. Given an existing intersection ID number, determine the next higher palindromic number that should be assigned to maintain this symmetric identification system.
    

    """
import sys

def next_smallest_palindrome(num):
    """
    In a smart traffic management system, each intersection requires a palindromic ID number for bidirectional recognition, where the ID reads the same from both approaching directions. Given an existing intersection ID number, determine the next higher palindromic number that should be assigned to maintain this symmetric identification system.
    

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