Could someone fill me in on collision detection? My 2016 BMW has Front Collision warning which can be set to min/med/max range. I've got it set to max range. It

Could someone fill me in on collision detection? My 2016 BMW has Front Collision warning which can be set to min/med/max range. I've got it set to max range. It can detect a solid object that is coming up to collide with my car and warn me via sounds and HUD. Do Teslas not have some method of solid object collision that should supersede any driving directive? As per my previous comment, could a prankster paint a set of white lane markers that verve into a concrete wall or even off a cliff? That's freaking scary to me that these systems are so reliant on lane markings. At highway speed, a distracted driver, would have little time to be alerted, assess the situation and take the correct corrective action before a collision occurred.