Every driver must have experienced the “ghost probe”. He will not give the driver reaction time to reduce collision damage. During the normal driving of the vehicle, pedestrians appear from the blind area of vision, and Volvo automatically brakes, which arouses the attention of many professionals and netizens. What do you think of this?
Speaking of this topic, I thought of the zebra crossing in front of the main entrance of my community. The road it crosses is an urban secondary arterial road with a two-way six-lane design (three lanes in each direction) and a large traffic volume. The zebra crossing itself is not equipped with signal lights. Instead, an inverted triangle + double dashed line is painted on the road to decelerate and yield. In theory, this is a fairly reasonable design. If everyone abides by the rules, it can take into account the efficiency of both pedestrians and vehicles. However, things backfired. It may be the reason why my city is not severely punished for impolite pedestrians. Most drivers do not have the awareness of “the highest pedestrian right of way on zebra crossings”. Drivers who are willing to be courteous are rare, even flashing lights and horns. There are a lot of people on the throttle to speed up the road. This makes pedestrians on this zebra crossing, or they have to wait endlessly for drivers who are willing to stop and give way, or they have to see the stitches and fight with flesh and blood and speeding vehicles. The poor experience is second. The risks among them are the most worrying. After all, I often pass the zebra crossing mentioned above as a pedestrian, so when I drive through, part of it is because of empathy, and more because of observance of traffic rules. If you see there is waiting for passage Pedestrians will stop and be courteous. But embarrassingly, I stopped. The car in the lane next to me will probably stop following me. Pedestrians are still unable to pass. What’s more, at this time, my car will become an obstacle that obstructs the sight of both pedestrians and drivers, which directly creates the most perfect conditions for the appearance of “ghost probes”, especially for short stature (more easily The risk is even greater for children with insufficient traffic safety awareness. In fact, this is really just a typical case. There are countless similar scenes all over the country. There are nearly 20,000 children under the age of 14 killed in traffic accidents every year in my country, ranking first in the world. This shocking figure has a considerable percentage behind it because of such a scene. “The road is like a tiger’s mouth” is by no means alarmist. Children’s Day is approaching. When everyone is planning how to celebrate the holiday with their children, the thought that so many families will never have the opportunity to celebrate, it is really too worrying for people like us who are already parents. To improve the status quo, the most direct way is for every driver to start from himself, abide by the laws and regulations, and drive cautiously. But regardless of whether such a possibility exists, even if everyone is willing to do so on a subjective level, at an objective level, can everyone be able to keep driving without distracting themselves? Can everyone respond promptly and correctly when encountering emergencies? Take the “ghost probe” scenario just mentioned as an example. The danger is that the process is extremely sudden and the reaction time for the driver is very limited. Not to mention that not all drivers can take timely action to avoid, even if they react. It is still a question mark whether the operation is correct and effective in a hurry. The most feared is that the operation error not only fails to avoid the danger, but also causes more accidents and causes more injuries. Therefore, the value of the active safety system has been reflected, and the incident mentioned in this question is one of the best examples. At present, most of the active safety systems on the market are specifically calibrated for a series of common high-risk scenarios, including “ghost probes”. Understand that the active safety system made by Che Di some time ago is in the big horizontal evaluation, you can It can be seen that there are still many models that can avoid such accidents within a certain speed range, and at the very least, they can also reduce injuries. But the fly in the ointment is that in the Hengping review, we found that most models respond to this scenario by simply using AEB braking to decelerate, and the experimental conditions set by the car emperor are actually relatively ideal. It is possible in reality. It is impossible to guarantee sufficient distance for braking. To avoid accidents, it may be necessary to evade direction. If AEB is not well calibrated, it may disrupt the rhythm of the driver’s avoidance operation, and even occupy too much grip of the tires. The effect of the avoidance operation is compromised. To a certain extent, it is a distance between ideal and reality. But this kind of distance seems to not exist in Volvo’s models: Volvo, as a camera in the Youku video v.youku.com video, not only did not slow down because of the short distance, but also helped driving. The operator completed the emergency line change and finally successfully avoided the danger. It can be said that at least in this case, the active safety system of the video shooting vehicle has reached our current highest expectations for similar functions. However, one point needs to be corrected. In the video, the driver said that the car “changes the route by itself” to avoid obstacles, but in fact, according to the information displayed by Volvo officials, what played a role in this case was included in Volvo City Safety. The emergency steering assist function in the system function package does not include the setting of crossing the driver to make a decision to change lanes in its operation logic. Instead, it will be transparent at the moment when an impact is about to occur and the driver intends to avoid the impact by turning the steering wheel. The brake assists the steering of the vehicle and increases the steering force of the steering wheel, so that the entire line change action is faster, more efficient and safer. However, due to the extremely fast system intervention speed, the driver may only start to make a little movement on his hand, and the vehicle will quickly complete the next operation, so that the driver has the illusion that the car is “changing itself”. Regarding the working principle of the emergency steering assist function, if the above text description is not clear, I also found the video introduction material: Youku Videov.youku.com I have to say that years of research in the field of safety have indeed enabled Volvo to compete with All aspects related to it have achieved a more extreme height than friends. For example, the City Safety system mentioned just now, as a package containing multiple functions, in addition to the most praised emergency steering assist function on the Internet, other aspects of functional performance are also the first of its kind. Echelon. The first is the breadth of scene adaptation. Volvo City Safety covers a wide range of working conditions. Its identifiable objects include other vehicles, cyclists, pedestrians and even large animals, while the available scenarios are facing/same direction vehicles from the front. Collision, pedestrian/cyclist/animal crossing the road, and even collision at intersections are all taken into account, and it can be used at night (dark environment). Under this premise, the collision avoidance (relative) speed thresholds for vehicles, cyclists and pedestrians have also achieved 60km/h, 50km/h and 45km/h, which are almost the highest level in the industry. Drivers should be able to understand that urban operating conditions are basically the operating conditions with the most complex environment and the most risk sources. Therefore, since Volvo can make City Safety so perfect, optimization for other operating conditions must be more handy. Brought it. For example, when a vehicle leaves the city and reaches a higher speed section, for a speed range of 60km/h higher than the City Safety working limit, there will be an ACC adaptive cruise control system based on Pilot Assist and automatic follow-stop. , And ADAS advanced driving assistance realized by functions such as lane keeping assist, to help reduce the burden on the driver while improving driving safety. It is worth mentioning that the new XC60 also adds a DAI ready-to-leave notification that can alert the driver when the vehicle is about to leave the congested zone in the ADAS package, and can be used after monitoring (steering wheel) without input for a long time. The ESA Emergency Stop Assist, which stops the vehicle smoothly and turns on the warning lights, is a more comprehensive containment of possible risks. Regardless of whether the vehicle is entrusted to ADAS or the driver is controlled by himself, Volvo’s exclusive features such as road departure protection and oncoming vehicle intelligent avoidance will escort all the way. For example, for ultra-low speed conditions below the City Safety start threshold of 4km/h, Volvo provides auxiliary functions including rearward collision warning system, backward active braking, and reversing side warning system (with brake assist), etc. It can ensure that when the vehicle starts/parks, the driver and other traffic participants around the vehicle are still fully protected during the short period of time in the parking lot. In addition, Volvo has made some targeted optimizations even in the relatively high penetration rate now, and many other brand models have more basic safety configurations, so as to achieve “everyone is equipped, but in The results above are better for me.” For example, in the dynamic stability control of the vehicle, it is a functional combination of ABS+TSC+ESC in many other models, but Volvo integrated it into the DSTC dynamic stability and traction control system, and then subdivided AYC into scenes. The four functions of active yaw control/yaw angle control, UCL understeer control logic, ASC active stability control, and DSR driver steering suggestion can achieve more nuanced dynamic control effects of the body. Among them, the DSR driver’s steering suggestion especially needs to be mentioned. It will even make suggestions to the driver to correct the steering angle input according to the current vehicle condition. On the one hand, it avoids the risk caused by human error in judgment to the greatest extent. On the other hand, it will not skip the rough intervention of the driver, and still leave the decision-making power in the hands of the driver. Indeed, from a functional perspective, Volvo’s full set of driver assistance & active safety systems are actually only a step away from the so-called autonomous driving, but at least for now, as just mentioned, Volvo still sticks to its strategy very much, and still puts the driver’s judgment on top of the highest priority. Related functions in Volvo’s models are neither purely as a solution to the driver after operating errors, nor overly aggressively competing with the driver for vehicle control. Volvo has successfully turned the active safety function into the driver. The extension of consciousness and body, it organically forms a cooperative relationship with the driver, which also explains why it is easier to achieve more ideal functions than other brands in actual use. The effect of intervention. In fact, the working logic of emergency steering assistance in City Safety above has already well demonstrated this kind of calibration logic that the driver is always in the first decision-making order, and it is not only this function that can reflect this idea, but the facts. Almost all Volvo’s active safety functions mentioned above, especially the functions related to City Safety, basically follow the following logic for intervention: After detecting the risk, the first warning sound (didi beeping sound) Remind the driver to pay attention and give operation suggestions. At this time, if the driver can respond, the system will assist according to the situation to achieve the maximum risk avoidance effect. The system will only be used when the driver has not responded. Override the driver to take over the vehicle to ensure minimum protection. Personally, I still recognize Volvo’s values very much. After all, the four words “people-oriented” are both respect and responsibility. It also places higher demands on the driver’s own safety awareness. To a certain extent, this can be regarded as returning to the most fundamental level to solve the problem of traffic safety.