00:00Fresh Test Executing in 3-2-1. So this is our Crash Test Lab.
00:12The test vehicle starts at the end of the track about 340 feet away.
00:17We attach the vehicle to the propulsion system to the steel cable here.
00:22The two model south propeller drive units pull the vehicle all the way down the track until it's about 3 meters away from the wall.
00:30While in advance of us ever producing a physical prototype, we're running thousands of crash simulations.
00:39So at the design level, we'll produce 3D models of the parts and we'll simulate those using very complex and sophisticated mathematical models that represent the physics of the crash.
00:50One unique passive safety feature in the Model 3 is a specially designed front passenger airbag which helps protect the occupant and obstructive crashes where they might come into contact with the interior.
01:06Safety is a top priority. So, I think that's really encouraging when you see feedback from people who have gotten into serious crashes and they give you that feedback that you've saved their lives or the lives of their loved ones is a really great feeling and and shows the work that we're doing is worthwhile.
01:24Hey everyone, Lars here in the Tesla engineering crash safety lab. I wanted to talk a little bit about what makes our car so safe.
01:36Astive safety is what happens after you get into an accident. We think about that from the beginning of a design and what we're trying to do is absorb as much energy from whatever object you hit before it hits the cap.
01:46That's we always like to think we have two rules. Number one, protect the occupant. Number two, protect the battery. See rule number one, protect the occupant.
01:55The way we do that is in a progressive nature of crash structure. This is what it looks like a car looks like underneath the skin.
02:01You have your bumper beam, crush can and then you have what we just debuted in Austin as our new front under body casting.
02:08What happens when you get into an accident is first the bumper beam crushes up. It progressively cushions up the crush and absorbs the low speed energy under 20 miles per hour and then we get into our casting.
02:18The design is such that the ribs at the beginning of the casting are thinner than the ones at the back and we progressively increase them so that we have controlled crushing of the entire system as it goes up before it gets to the cabin here.
02:30But what else you'll notice is there's multiple load paths. This is a higher load pad for capability with other vehicles on the road.
02:37Sometimes we need a lower load path if you get a different sized object. There's space vertically to transfer the load not only through the crush rail but also through our subframe which pulls the drive unit down and out of the way from the cabin behind you and out of the way of the battery but we don't just do that in a vertical sense.
02:54We also did laterally the rain crush rail is great if you hit something up front but if you hit a pole or a tree just outside that crush rail there's nothing there to absorb energy in those cars.
03:05We put our lower load path just outside that crush and we actually angle it so that if you hit something here we start to absorb the energy and then we push the car away from whatever object you hit to make sure that you're not getting crushed into that object.
03:19The backup structure is what protects the cabinet after that. We use both our door rings, the glass and our battery to provide structure to hold all of this energy it's crouching up.
03:29But one of the things that's unique about all is the battery suit. A low center of gravity addition or suspension means our vehicles are less likely to roll.
03:38So, let's take a look at what a car looks like after a crash test and how these systems all.
03:43So, this here is actually a really special car. This is a car that was crash tested at net for a 5 star radium.
03:49And as you can see, all that energy was absorbed up front here, stopping really at the cabin like I was talking about.
03:56We do such a good job of making sure that you can actually open the door and get out.
04:01As you can see, aside from a little bit of white paint and some airbags going off, the cabin looks like it was untouched.
04:07And that means the occupant inside has all of the room that they had before the accident to survive the accident.
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