This is one of the issues I have with Mazda, and all other car companies is the alphabet soup they create with different sub systems....Keep in mind In the US we gets Advanced Smart City Brake Support with Pedestrian Detection only since 2019 CX-5 MY (expect 2019 CX-5 Sport). And both ASCBS and SCBS are for driving at low speeds (approximately 2.5 ~ 19 mph or 4 ~ 30 km/h on SCBS) only. The objects intended to detect are very different between the two.
Note that in 2021, SCBS no longer exists as it did in our 2014 CX-5, which was a low speed system that only worked below 30 kph (18 mph) and at relative speeds below 15 kph (9.3 mph) based on a laser sensor in the windshield, which in newer generations has been replaced by the Forward Sensing Camera (FSC). As you can see below, there are variations of SCBS, but none are the " "original" SCBS. As an aside, our SCBS only kicked in twice to our knowledge, each time with my wife, as she was approaching either a hedge near a shopping or low hanging branches (rain soaked crape myrtles that were drooping downwards 6+ feet).
ASCBS: Advanced Smart City Brake Support
SCBS: Smart City Brake Support
SCBS-F: Smart City Brake Support (Forward)
SCBS-R: Smart City Brake Support (Reverse)
SBS: Smart Brake Support
ASCBS: The Advanced SCBS alerts the driver of a possible collision using the display and a warning sound when the Forward Sensing Camera (FSC) detects a vehicle ahead or pedestrian and determines that a collision with the object is unavoidable while the vehicle is driven at a vehicle speed of about 4 to 80 km/h (2 to 50 mph) if the object is a vehicle ahead and about 10 to 80 km/h (6.2 to 50 mph) if the object is a pedestrian. In addition, the system reduces damage in the event of a collision by operating the brake control (Advanced SCBS brake) when the system determines that a collision is unavoidable. In addition, when the driver depresses the brake pedal, the brakes are applied firmly and quickly to assist.
SCBS-F: The SCBS F system alerts the driver of a possible collision using an indication in the display and a warning sound when the Forward Sensing Camera (FSC) detects a vehicle ahead and determines that a collision with a vehicle ahead is unavoidable while the vehicle is being driven at a vehicle speed of about 4 to 80 km/h (2 to 50 mph). In addition, the system reduces damage in the event of a collision by operating the brake control (Smart City Brake Support (SCBS) brake) when the system determines that a collision is unavoidable while the vehicle is being driven at a vehicle speed of about 4 to 30 km/h (2 to 18 mph). It may also be possible to avoid a collision if the relative speed between your vehicle and the vehicle in front of you is less than about 20 km/h (12 mph). In addition, when the driver depresses the brake pedal while the system is in the operation range at about 4 to 30 km/h (2 to 18 mph), the brakes are applied firmly and quickly to assist. (Brake Assist (Smart City Brake Support (SCBS) brake assist))
SCBS-R: The SCBS R is a system which is designed to reduce damage in the event of a collision by operating the brake control (SCBS brake) when the system’s ultrasonic sensors detect an obstruction at the rear of the vehicle while driving at a speed of about 2 to 8 km/h (2 to 4 mph) and the system determines that a collision is unavoidable.
SBS: The SBS system alerts the driver of a possible collision using a display and warning sound if the radar sensor (front) and the Forward Sensing Camera (FSC) determine that there is the possibility of a collision with a vehicle ahead while the vehicle is being driven at about 15 km/h or faster (10 mph or faster). Furthermore, if the radar sensor (front) and the Forward Sensing Camera (FSC) determines that a collision is unavoidable, the automatic brake control is performed to reduce damage in the event of a collision.
In addition, when the driver depresses the brake pedal, the brakes are applied firmly and quickly to assist. (Brake Assist (SBS brake assist))