This is a bit hard to answer - as I don't know, what I see/do know. ABS = Anti Lock Braking System EBS = Electronic Braking System The "Select Low Control" System you asked about is actually, "Select Low" Control System. Which IS different. Select low control - system = system of selecting low control Select low - control system = system of selecting low. I think it's the order or the degree of control which the computer in the EBS changes what's happening to the wheels in a situation where the car would most likely be out of control. Sorry it's not a definitive answer but it's the best I can do at the moment. = Categories of ABS Towing Vehicles Category 1 The ABS will operate on at least one front axle and on one rear axle and have the ability to utilise the higher adhesion when braking on a split friction surface. This will require one of the axles, usually the rear axle, to have independent control. A typical system would have four sensors and four modulators but could effectively have four sensors and 2 or 3 modulators. In the latter case the front axle could use one modulator with a “Select Low” control philosophy where modulation action is taken on the first wheel to lock. This system will protect the towing vehicle from brake induced jack-knifing and enable the driver to steer during braking by preventing the directly controlled wheels from locking. Category 2 The ABS will operate on at least one front axle and on one rear axle. The system will have a minimum of four sensors and two modulators (one for each axle). The system will generally operate on a “select Low” control philosophy where modulation action will be taken on the first wheel to lock. This system will protect the towing vehicle from brake induced jack-knifing and enable the driver to steer during braking by preventing the directly controlled wheels from locking.