There are toggle settings for object detection and such. Also if you're pressing on the accelerator to manually override the TACC speed setting by going above the set-point you also get an ongoing warning that AP will not apply braking to override the speed.
Good chance you'll get warnings, it'll screech and flash red at you, and maybe even blunt your acceleration some, but the AP's design philosophy has manual control by the driver at the top of the hierarchy.