diff --git a/vllm/engine/arg_utils.py b/vllm/engine/arg_utils.py
index b0f50b4429a8..972ac203d7c6 100644
--- a/vllm/engine/arg_utils.py
+++ b/vllm/engine/arg_utils.py
@@ -8,7 +8,6 @@ import dataclasses
 import functools
 import json
 import sys
-import threading
 from dataclasses import MISSING, dataclass, fields, is_dataclass
 from itertools import permutations
 from typing import (TYPE_CHECKING, Annotated, Any, Callable, Dict, List,
@@ -1527,11 +1526,6 @@ class EngineArgs:
         #############################################################
         # Experimental Features - allow users to opt in.
 
-        # Signal Handlers requires running in main thread.
-        if (threading.current_thread() != threading.main_thread()
-                and _warn_or_fallback("Engine in background thread")):
-            return False
-
         if self.pipeline_parallel_size > 1:
             supports_pp = getattr(self.distributed_executor_backend,
                                   'supports_pp', False)