diff --git a/gym/f110_gym/envs/base_classes.py b/gym/f110_gym/envs/base_classes.py
index c9754d50..d945c698 100644
--- a/gym/f110_gym/envs/base_classes.py
+++ b/gym/f110_gym/envs/base_classes.py
@@ -119,7 +119,7 @@ def __init__(
         self.in_collision = False
 
         # collision threshold for iTTC to environment
-        self.ttc_thresh = 0.005
+        self.ttc_thresh = 0.0000005
 
         # initialize scan sim
         if RaceCar.scan_simulator is None: