diff --git a/rust/altrios-core/src/train/braking_point.rs b/rust/altrios-core/src/train/braking_point.rs
index b435b294..876511f8 100644
--- a/rust/altrios-core/src/train/braking_point.rs
+++ b/rust/altrios-core/src/train/braking_point.rs
@@ -117,6 +117,7 @@ impl BrakingPoints {
                     );
                     let vel_change = train_state.dt
                         * (fric_brake.force_max + train_state.res_net())
+                        // TODO: maybe add rotating mass in denominator
                         / train_state.mass_static;
 
                     // Exit after adding a couple of points if the next braking curve point will exceed the speed limit