Modern crossovers made in China, such as the Geely Coolray, are equipped with advanced active safety systems that were previously available only in the premium segment. One of the key technologies here is automatic emergency braking, known by the abbreviation AEB. Owners of the A3 model, which has become widespread in the CIS markets, often wonder about the real possibilities of this electronic assistant in urban conditions and on the road.
Understanding the principles of AEB operation is critical to the safe operation of the vehicle, as blind faith in electronics can lead to an emergency. Geely Coolray A3 It uses a combination of radar sensors and cameras to monitor the space ahead, but any system has physical speed and distance limits. In this article, we will analyze in detail the speed thresholds of the response and the nuances of the interaction of the driver with automation.
Despite the advanced algorithms, the system is not a panacea and requires constant attention from the person behind the wheel. The maximum AEB efficiency in the Coolray A3 is achieved in the speed range from 4 to 85 km/h, with full collision avoidance usually up to 60 km/h. The future behavior of the car depends on many factors, including weather conditions and the condition of the road surface, which must be considered when planning a trip.
Principle of operation and technical features of sensors
The basis of the security system in Geely Coolray It is a long-range radar located in the front of the bumper, and a front camera mounted behind the windshield. These components work together, creating a unified picture of the surrounding space. Radar is responsible for determining the distance to an object and its relative speed, while the camera is responsible for classifying an object – whether it is a car, pedestrian or cyclist.
Data processing algorithms analyze the trajectory of the movement and the probability of collision in real time. If the system calculates that the current movement dynamics will lead to contact with the obstacle, it initiates a warning alarm. The driver sees visual cues on the dashboard and hears an audible beep calling for immediate action.
- 🚗 The radar sensor scans the area up to 160 meters ahead of the vehicle, ensuring early detection of obstacles.
- 📷 The high-resolution camera recognizes markup and object types, reducing the number of false positives.
- ⚡ The control unit makes a decision on braking in milliseconds if the driver's reaction is insufficient.
It is important to note that for the correct work electronic assistants The purity of the external elements is necessary. Mud, snow, or ice crust on the camera’s radar or glass can completely paralyze the system. In such cases, the display usually lights up the appropriate warning about the unavailability of the function, and the driver must take control of the situation solely on himself.
Rub the radar area in the bumper and the area around the camera on the windshield regularly, especially after washing or snowfall, to keep the safety system functional.
Activation speed ranges and braking efficiency
The question of how fast the AEB can recognize the car and stop it Coolray A3It is one of the most discussed among the owners. The system does not work equally efficiently across the entire speed range; its capabilities are divided into several zones, each with its own characteristics. In urban areas, where speeds rarely exceed 60 km/h, the probability of a complete accident prevention is maximum.
When driving in a stream at speeds up to 30 km / h, the system is able to completely stop the car in front of a stationary obstacle or slow moving transport without the driver. This is an ideal scenario for traffic jams and parking lots, where short distances and sudden stops are frequent. However, with increasing speed, efficiency shifts from total prevention to mitigation of impact.
In the speed range of 30 to 60 km/h, the system can still stop the vehicle completely if the distance to the vehicle in front allows. If the approach is too fast, the AEB will reduce the speed before impact, which will significantly reduce the force of inertia and possible damage. Above 60 km/h, the system is primarily aimed at reducing the severity of the effects, rather than at a guaranteed stop.
⚠️ Attention: The AEB system is not designed for emergency braking at high speeds (above 80-85 km / h) in front of static objects. At such speeds, braking physics requires a longer distance than automatics can provide, so the responsibility lies entirely with the driver.
For clarity, consider the dependence of the system efficiency on the speed of movement in the table below:
| Speed of movement | Type of AEB reaction | Probability of a complete stop |
|---|---|---|
| up to 30 km/h | Full braking. | Tall. |
| 30 - 60 km/h | Full or partial braking | Medium/High |
| 60 - 85 km/h | Decrease in impact speed | Low. |
| above 85 km/h | Warning/Preparation | Minimum |
Recognition of static and moving objects
Ability. radar-chamber Distinguishing the types of objects directly affects security. V Geely Coolray A3 The algorithms are set to prioritize the detection of cars moving in the same direction. This is the most common use case on highways and country roads, where the risk of a head-on collision is minimal, but the risk (hitting from behind) is high.
Static objects, such as parked cars, jacks or concrete fences, are more difficult to recognize, especially at high speeds. The system can ignore a fixed object if it is outside the radar’s confident reception zone or if its geometry is not perceived by the camera as a threat. That is why relying on electronics when parking or driving in difficult conditions is not worth it.
Pedestrians and cyclists are also in the system's spotlight, but their detection has its limitations. Due to its smaller size and more complex trajectory, the response to a person may be delayed compared to the response to a car. At night or in poor visibility, the effectiveness of recognizing vulnerable traffic participants is reduced.
- 🚙 Moving cars are recognized most accurately and at the greatest distances.
- 🚧 Static barriers and parked cars can be skipped at speeds above 60 km/h.
- 🚶 Pedestrians and cyclists require special attention, as the system may react with a delay.
Impact of weather and road conditions
External factors play a crucial role in the operation of any active safety system. Rain, snow, fog or bright sun hitting the camera lens can significantly reduce efficiency. Coolray sensors. The water on the windshield distorts the image for the camera, and dense precipitation absorbs radar radio waves, reducing its range.
Particularly critical are the conditions where visibility is limited. If the camera cannot clearly see the traffic situation, the system goes into standby mode or shuts down, notifying the driver with the corresponding message on the dashboard. A dirty road that raises dust or splashes can also cause temporary loss of functionality.
Winter operations require a special approach. The snow porridge sticking to the bumper completely blocks the radar. The ice crust on the windshield in the chamber area makes her "blind." In such conditions, it is absolutely impossible to rely on AEB - the car will behave as if this system does not exist at all.
Why can the system shut down in the rain?
Heavy rain creates a lot of reflective surfaces that radar perceives as interference or false objects. To avoid false emergency braking, the system automatically reduces sensitivity or temporarily shuts down.
Configuring and managing security functions
Owners Geely Coolray A3 have the ability to flexibly configure the operation of the AEB system through the menu of the multimedia complex. This allows you to adapt the sensitivity of the assistant to your driving style. However, it is worth remembering that any settings do not change the physical limitations of the equipment, but only correct the moment of warning.
To access the settings, you need to go to the car menu and select the section responsible for active safety. Here you can choose the warning distance (far, medium, close) and the sensitivity of braking. Some versions of the software allow you to completely disable the system, although it is not recommended to do this without an urgent need.
The sequence of actions to check the settings usually looks like this:
- Press the Home or Menu button on the center console.
- Go to section.
Car settings. - Select the tab
SecurityorADAS. - Find a point.
Emergency braking systemand select the mode you want.
⚠️ Attention: After each engine start, the AEB system settings may be reset to standard values depending on the software version. Always check the status of the system before starting the movement.
☑️ Checking system readiness
Typical scenarios and limitations of AEB operation
There are a number of scenarios in which the system may not behave as the driver expects. For example, when a sharp rearrangement of another car, when it is right in front of the nose. Coolray A3The system may not have enough time to react. False positives can also be made on metal bridges, hatches, or road signs if the algorithm is mistaken in their classification.
Movement on serpentine or steep ascents/descents is also a difficult condition. The radar can "lose" the car in front of it due to a change in the angle of inclination, which will lead to an unexpected acceleration or lack of reaction to braking in front of the moving vehicle. In such situations, the driver must be ready to take control instantly.
In addition, the system is not designed to operate in off-road conditions or on dirt roads with poor surface. Unstable traction of wheels can lead to malfunctioning of ABS and ESP, which, in turn, will disrupt the algorithms of the AEB. On a slippery road, the braking distance increases, and the automation may not have time to stop the car even if an obstacle is detected in a timely manner.
- 🌉 Metal bridge designs and overpasses can cause false radar alerts.
- ⛰️ On steep ascents and descents, the visibility zone of the sensors narrows.
- ❄️ On a slippery road, braking efficiency is reduced due to the physics of tire adhesion.
The AEB in the Coolray A3 is an effective city and track assistant, but it does not replace the driver’s attention and does not guarantee a stop in all possible situations.
Frequently Asked Questions (FAQ)
Can I turn off the AEB system in Geely Coolray?
Yes, in the car settings through the media menu, it is usually possible to turn off the collision warning and emergency braking system. However, the system can automatically be switched on again each time the engine is started for safety reasons.
Why didn't the system work when I drove up to the parked car?
The AEB system is primarily focused on moving objects. Static obstacles, especially at high speeds or at a certain angle, may not be recognized as a collision threat. Always control the situation yourself.
Does the windshield tinting affect the camera?
Yes, strong tinting, especially in the camera’s rear-view mirror area, can degrade image quality and reduce object recognition efficiency, especially at night.
What does the flashing red indicator on the dashboard mean?
A flashing red light in combination with an audible signal means that the system has detected a critical collision hazard and either requires your immediate intervention or has already begun the emergency braking process.
Do I need to calibrate the sensors after replacing the windshield?
Yes, replacing the windshield requires calibration of the ADAS camera in a specialized service. Without a calibration procedure, the system may not work properly or be completely disabled.