General Information
SGA provides assistance on the passenger-side of the vehicle while turning and changing lanes. SGA monitors the area on the passenger-side of the vehicle and trailer using two short range radar sensors. The radar sensors are mounted close to the rear of the passenger footsteps. See Fig.. The optional enhancement, ASGA, enables the brakes to automatically activate in certain low-speed passenger-side turns.
Important: SGA is designed for use with one trailer attached to the tractor. The optional enhancement, ASGA, reacts only to moving objects within SGA's sensor monitoring area.
SGA detects if a trailer is attached to the tractor, but it cannot detect whether or not multiple trailers are attached. If used with more than one trailer, SGA only considers objects or stationary obstacles in the range of the tractor and the first trailer. False-positive indications and warnings may occur with multiple trailers.
Important: SGA and its enhancement, ASGA, are not currently designed to work with non-ABS trailers or on trucks with steer lift axles.
A triangular warning lamp in the A-pillar is located near the side mirror. This lamp, as shown in Fig., lights up to inform the driver that an object is detected in the monitored area. An additional warning tone sounds if there is a risk of collision.
Fig. 1, Radar Sensors with Covers
The ASGA engages at speeds less than 12 mph (19 km/h). If SGA detects a critical moving object in the sensor monitoring area along the side of the truck during a passenger-side turn, the ASGA automatically applies the brakes. The sensor monitoring area is shown in Fig..
Fig. 2, SGA Warning Lamp
SGA only monitors the passenger-side of the vehicle and one trailer. The two dark cones indicate two sensors: one angled toward the front of the truck; one angled toward the back. Objects within 6-inches of the truck are not detected. Monitoring of other areas would require additional equipment that is outside the scope of this section.