There is a big problem with the current active safety technology: that is, the ACC active following system, lane centering system, as well as the forward collision warning and automatic braking system are getting better and better, but the RCTA rear lateral traffic flow warning system and RAEB reversing emergency braking system are as simple and sloppy as ever! The American Automobile Association is a non-profit organization that specializes in providing automobile, travel, and traffic safety information, and AAA recently conducted a study specifically for RAEB reliability testing, and the results were not unsatisfactory, but relatively close to panic and fear! The conclusion is: at present, your eyes are still relatively reliable, and visual + artificial brakes are the safest from eye to foot. Why is this happening?
One of the main reasons for this is RCTA rear cross-traffic warning or ARB active braking system, which is usually just an extension of parking radar and blind spot warning system! It's more like an accessory. To put it bluntly, car manufacturers have not seriously developed and strengthened these designs, anyway, NCAP and IIHS have not been tested and verified to this part, but AAA sees this crisis in advance. Compared with the forward impact warning and active braking system, ARB does not have a single lens or advanced dual lens, triple lens assistance, and it is impossible to have laser light radar, and the radar used usually does not cover different staggered designs such as long wave and short wave, plus the detection direction of RCTA and ARB must cover the left and right sides of 180 degrees or even reach 270 degrees of ultra-wide range, at least a dozen or more radars are needed to make speed and distance detection above the level and target identification, However, I believe that the number of radars in the rear impact safety system of various car manufacturers is far lower than this value, which is the cost problem and the sales niche, after all, consumers have not paid attention to this link, and they can't buy sales with more money at present.
What are the actual test results? What does extreme lack mean? AAA used four hot-selling 2023 SUVs from four brands to conduct 40 emergency braking tests on the rear side traffic, of which only one RAEB accurately braked the body without a collision, and the other 39 times won the bid. It means that it is equivalent to a normal driving vehicle, and it was shot down 39 times by the road Sanbao who was reversing and was not long-sighted, and its defense was only 25％！Although the RAEB did apply the braking effect on a number of 26 times, it may have been reduced to a degree, but the result was still a collision with a vehicle driving sideways behind it. Therefore, the extreme lack of evaluation is not excessive, because the test results are almost completely wiped out!
It is clear that the current RAEB is not reliable. Okay, maybe the current RAEB is not high in detection and defense capabilities for 24km h low-speed lateral vehicles, so it can always accurately judge and brake for stationary targets, right? But that's not the case! In addition to the emergency braking test of lateral traffic, AAA did 20 times of emergency braking test of the dummy directly behind the vehicle, and the results showed that 15 RAEB braking effects during the test, but there were still up to 10 times, that is, 50 of the proportion of the dummy knocked down, this result is of course unsatisfactory, because 5 of the 20 tests The vehicle did not brake at all and directly ran over the 115cm tall dummy! Oh, poor boy....The test results showed that Raeb's defense against children behind him was only 50, and the lethality rate could be as high as 25! Please note that the child dummy is in a stationary state, not a lively situation, but the radar behind the body still does not judge the existence of a crisis, obviously every user must be on high alert to the moving vehicle that is reversing!
Who else thinks that the current RCTA and RAEB are reliable? Okay, the reader must be curious about which ones are the test vehicles? In fact, there are sales in China! The answer is Hyundai Tucson, Volkswagen Tiguan, Mazda CX-30, Lexus RX350. Among them, in the emergency braking test of rear traffic, the only car that did not hit the moving vehicle with precise braking was the Volkswagen Tiguan, which successfully escaped the crisis in the state of vertical traffic. According to the test results, the rear diagonal traffic is actually more difficult to prevent, in terms of proportion, in the vertical traffic flow test, up to 85% of the RAEB are actuated, but the collision is inevitable but in the diagonal traffic flow test, the RADB actuation ratio is only 45. As for the car with the worst test result in the rear traffic flow is the RX350, whether it is vertical or oblique traffic RAEB does not move, obviously this car is not suitable for the road Treasure to drive, reversing successfully shot down the oncoming car The achievement rate is relatively high!
But don't think that the Tiguan is the best overall, no! In the static simulation of a child's reversing emergency braking test, Tiguan actually suppressed the dummy under the car twice without braking! As for the Kid Terminator, which had 3 reversing without brakes at all, it was the CX-30 that took it. As for the RX350, which had relatively poor test results before, there was no big mistake at this level, and as for the Tucson, it maintained an average level, and on the whole, the four cars were not absolutely superior or inferior, but it can be determined that the current RCTA and RAEB are not reliable! Of course, these car manufacturers have something to say, and after the test results were announced, these car manufacturers also issued some statements, but the general content is: customer safety is the top priority of XX Automobile, so XX Group is committed to the development and research of various assisted driving. Don't pull, don't pull, don't pull. However, at present, the research and development of various active safety technologies can only reach the safety assistance function, can not absolutely avoid the crisis, the driver must fully grasp the surrounding environment during the driving process, RAEB can not replace the driver's concentration, the function, detection, range, resolution of various systems are limited, do not rely entirely on the active safety equipment, please refer to the owner's manual for more details. The driver remains fully responsible for safe driving.
Yes, the last sentence is the key, at present, if there is an unfortunate traffic accident, you still can't bite the car factory! This article is just to give you an idea of how trustworthy the RCTA and RAEB are at the moment. It's really not high! Just like you don't trust the Level 2 self-driving function too much, I believe everyone knows that many of the drivers who caused accidents on the highway and directly hit the Scorpion buffer car behind the construction truck were almost all driving ACC and dozing off.