Macan vs Byd safety

[Reno]

Porsche Macan er en sikker bil


https://teknikensvarld.expressen.se...ma-skillnader-i-filhallningssystem-vi-testar/


Ovenfor indstil denne side på svensk til dit sprog
I videoen fortæller han om, hvor sikkert og betryggende det er at køre Macan, hvis man bliver syg.

Det er dejligt, at Porsche passer på os.:venligst:

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[alxman]

Porsche Macan is a safe car


https://teknikensvarld.expressen.se...ma-skillnader-i-filhallningssystem-vi-testar/


Ovenfor indstil denne side på svensk til dit sprog
In the video he talks about how safe and reassuring it is to drive a Macan if you get sick.

Det er dejligt, at Porsche passer på os.:venligst:

Here is the English translation:

Our test reveals extreme differences in lane-keeping systems

Published February 5, 2025 at 09:45
Updated February 12 at 15:15

Since 2024, a lane-keeping assist system must be included in all new cars sold within the EU. In theory, this is a good step toward a safer traffic environment, but our tests clearly show that the systems’ performance varies extremely. From life-saving to the complete opposite.

Porsche Macan shows extremely good behavior in how the lane-keeping assist operates.

Lane-keeping assist is a relatively new safety system that includes several different functions. The first systems that were launched were almost a bit frightening in how they used abrupt steering inputs to help the car stay in its lane. Not very comfortable, and that was many years ago, but similar behavior still appears. However, this is not a major safety flaw—rather a comfort issue.

The lane-keeping assist system also includes an emergency assistance function that is meant to take over the car and help if, for some reason, the driver cannot maintain control of the vehicle on the road. Imagine the driver becoming acutely ill, unconscious, or even worse—if someone dies behind the wheel. That is when the third function comes into play: ensuring that when the system takes control of the car, it can prevent a serious accident involving oncoming traffic.

It is precisely the emergency assistance function that can fail dramatically. We want to emphasize from the outset that we have not seen any requirement for an expensive car to get a properly functioning system. The foundation for building good functionality exists in all new cars, regardless of price class. But the understanding of how the system should work varies enormously among manufacturers. And some have not understood at all how a safe system should operate.

Porsche Macan’s lane-keeping system works exactly as intended.

The Volkswagen Group has been very competent in this area, and the Porsche Macan illustrates the positive example. This is partly because all components of the Macan system work as they should, and partly because we find new functions that we have never encountered before.

BYD—Build Your Dreams—represented here by the Seal U model, illustrates how wrong things can go. It is clear that BYD has not prioritized the emergency assistance function—the system actually shuts down when the situation becomes truly critical. We have, of course, filmed all of this, and the footage is extremely worth watching (see above). But what exactly is happening?

Put simply, the Porsche Macan detects that no one is steering the car. This leads to warnings, which in turn lead to active attempts by the car to wake a sleeping driver—while the vehicle continues to drive well centered in its lane. This is done through seatbelt tugs, braking, and eventually frequent use of the horn. By the time this happens, the car has slowed down to almost a standstill with the hazard lights activated. Once the car comes to a stop in its lane, a support center is contacted. The operator will attempt to reach the driver. If there is no response, action is taken, which means contacting emergency services (112). And yes, the car’s location information is shared with the support center.

The lane-keeping system in the BYD Seal U has major problems performing its task.

In the BYD Seal U, the system detects that no one is steering the car, which triggers warnings. However, these are significantly milder than in the Porsche Macan. When the system receives no response from the driver, the car steers either toward the road shoulder or toward the center line before the system shuts down—but the cruise control remains active. And now it becomes genuinely dangerous. In every test run, the BYD Seal U is about to either drive off the road or cross the center line and continue into the oncoming lane. This is completely unacceptable, extremely dangerous, and not at all how such systems should operate.

Safety systems are meant to help the driver and passengers, and over the past 50 years, development has taken many enormously important steps toward making road traffic safer. With some perspective, we can conclude that anti-lock braking systems, stability control, and various forms of automatic emergency braking have had an extremely large impact on how we view traffic safety. At the same time, we know that not all systems work as they should, which our tests clearly demonstrate. One thing is certain—it is not enough for the system to simply exist in the car. It also has to work, which it absolutely does not in the BYD Seal U.