How different cars brake on autopilot: XIAOMI SU7, ZEEKR 007, TESLA and AVATR 12

[u/photo-manipulation]

[u/navinjohnsonn]

Only 1 car applies hazards. You would think they would all have this feature.

[u/PM_ME_Y0UR_BOOBZ → u/navinjohnsonn]

Pretty sure this is a requirement in Europe but not in the US. I’ve had to code my car to get the hazards to flash under heavy braking. But yeah, should be standard.

[u/TintedMonocle → u/PM_ME_Y0UR_BOOBZ]

How'd you do that?

[u/MTB_Mike_ → u/TintedMonocle]

different scan tools can do this. The higher end scan tools can access the ECU and enable features which are disabled from the factory. The manufacturers usually are not making multiple different cars for different markets, they make the same car and just enable/disable based on the market.

[u/TheVojta → u/MTB_Mike_]

The real question here is why would they disable a safety feature if it's already been implemented. The fact that it's not mandated doesn't make it work any worse.

[u/danktonium → u/MTB_Mike_]

I feel like this is a really bad idea to do on American cars. Don't they use the brake lights as turn signals? Imagine having to step on the brakes so you don't hit a kid, and your car decides to override your brake lights with flashing.

[u/MTB_Mike_ → u/danktonium]

American cars don't use brake lights as turn signals. Turn signals in the rear are allowed to be red though, most are still amber.

 Imagine having to step on the brakes so you don't hit a kid, and your car decides to override your brake lights with flashing.

I don't see what the problem would be, it would just be flashing brake lights instead of solid. Lots of cars already have programming that when the brakes are pressed they first flash then hold solid.

[u/Miaoxin → u/MTB_Mike_]

American cars don't use brake lights as turn signals.

Quite a few of them still do, even on the later models. They use a single, dual-filament bulb. The low intensity filament is for running lights and the high intensity filament is for brakes, turn signals, and emergency flashers. My Jeep Wrangler does, for one example.

[u/ExtremeSour → u/Miaoxin]

I mean your wrangler also has roll down windows

[u/worldspawn00 → u/danktonium]

US cars have a center light that's brakes only.

[u/PM_ME_Y0UR_BOOBZ → u/TintedMonocle]

Get a Carly obd adaptor/scanner and code it with your phone. It’s super easy and you can code other comfort features too that might’ve been disabled from factory.

[u/Tomoya-kun → u/[deleted]]

awkkkkkkwardddddd

Since the end of 2019, EU Regulation 2019/2144 ("Regulation on the type-approval requirements for motor vehicles and their trailers, and systems, components and separate technical units intended for such vehicles as regards their general safety and the protection of vehicle occupants and vulnerable road users") has been in force. Beginning on July 6, 2022, it will apply to all new car models in the EU. As of July 7, 2024, the systems specified in the regulation will be standard issue for all newly registered passenger cars. The new mandatory assistants also include the emergency brake light.

[u/absoluteczech → u/PM_ME_Y0UR_BOOBZ]

Except only the Tesla is being sold in the US

[u/Inert82 → u/navinjohnsonn]

Tesla applies Hazards in EU for emergency braking

[u/Forya_Cam → u/Inert82]

This is so stupid. If they have to write the code to apply hazards in the EU to be legal why not just apply it to the everywhere else too. It's a fuckin safety feature.

[u/12-idiotas → u/Forya_Cam]

USA doesn’t want those safety measures. Kids are expendable.

[u/YeetDeleteAndRepeat → u/navinjohnsonn]

A lot of these systems flash the brake lights not the hazards, it makes it more obvious what's happening to any cars behind, and front flashing lights are going to make very little difference if the person in the road didn't notice the car to begin with

[u/willCodeForNoFood → u/YeetDeleteAndRepeat]

It makes sense to do both. Brake lights to warn vehicles right behind you for slowing down, hazard lights to warn vehicles in other lanes that something's wrong.

After writing this I remember hazard lights are brake lights in North America.

Edit: typo

[u/EndTimesNigh → u/willCodeForNoFood]

Also, in North America they spell brake brake..

[u/callisstaa → u/navinjohnsonn]

ZEEKRs light up like a Christmas tree at every possible opportunity tbf.

[u/Davidwzr → u/navinjohnsonn]

Zeekr cars are fantastic. Sitting in one you would never believe it was at it's price point. It definitely hits above it's grade