People need to make sure what type of brakes they are talking about and referring to. TRIM BRAKES, used to slow a train that is travelling too fast for the next element or track run is very different from a MID-COURSE BRAKE RUN which is generally used to stop a train in an emergency or to adjust speeds very slightly due to fluctuations in weather conditions. Any coaster with three operating trains MUST have an emergency mid-course brake run, so the rear train can be stopped if, for whatever reason, the train in front of it stalls on the track. The station itself serves as a second brake run. These are seen on Batman:Knight Flight. Trims are those such as on Mantis, that are often added to the ride after time to adjust the intensity of a specific element or area of the ride. Some rides may use the mid-course brake run as a trim brake as well. This is the case on Goliath.
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My other car is a Giovanola!