this kind of thing. It's also the first vehicle I've had with adaptive cruise control as well, and that's part of my question as well.

It's a Toyota Tundra i-Force Max, the Max being the hybrid version of just the regular i-Force. Because it's a truck, it's not the typical hybrid, but I would guess that many of the same principles apply. I'm curious about braking, vs. regenerative braking and when the brake lights come on and such.

I know that regenerative braking kicks in before the actual pads clamp down on the rotors, but I often feel that same "braking" sensation when the adaptive cruise control detects a car ahead and it starts to slow down to not run into them. I'm assuming that is often a regenerative braking situation when not extreme. Are the rear brake lights now controlled by an accelerometer or some other type of speed change detecting sensor as opposed to the actual brakes being applied?

It seems obvious that the brake lights would come on if I press on the brake pedal, regardless of whether the actual brakes are doing the deceleration or not. Does the same apply for adaptive cruise control? Also, if the adaptive cruise control is slowing me down on to the set mph while going downhill to keep me in that same range, at what point are the brake lights engaged vs if it's just like it's coasting or engine braking?

Just some thoughts I've had while driving this truck.