diff --git a/car.capnp b/car.capnp
index 7cbd4b6..37d98ab 100644
--- a/car.capnp
+++ b/car.capnp
@@ -432,7 +432,8 @@ struct CarParams {
   startingAccelRate @53 :Float32; # m/s^2/s while trying to start
 
   steerActuatorDelay @36 :Float32; # Steering wheel actuator delay in seconds
-  longitudinalActuatorDelay @58 :Float32; # Gas/Brake actuator delay in seconds
+  longitudinalActuatorDelayLowerBound @61 :Float32; # Gas/Brake actuator delay in seconds, lower bound
+  longitudinalActuatorDelayUpperBound @58 :Float32; # Gas/Brake actuator delay in seconds, upper bound
   openpilotLongitudinalControl @37 :Bool; # is openpilot doing the longitudinal control?
   carVin @38 :Text; # VIN number queried during fingerprinting
   dashcamOnly @41: Bool;