Forward collision mitigation (FCM) assist




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The forward collision mitigation assist system (FCMS) uses a millimeter- wave radar installed at the front of the ◇ Collision warning vehicle and a camera on the front - When the imminent collision windshield to detect objects ahead, warning is triggered by the forward assess the relative distance and speed collision mitigation assist system between the objects and the vehicle, and (FCMS), the corresponding target evaluate the risk of a collision based will be displayed in red on the on the driver's other actions (e.g., instrument panel, accompanied by a pressing the brake or accelerator warning sound. pedal). If there is a collision risk, the Brake jerk ◇ system will alert the driver to take control. If a high collision risk is detected at - If a collision is imminent, the system a relatively high speed, the will automatically apply the brakes. If the system will trigger brake jerk to driver is braking but the braking force alert the driver to immediately is insufficient to avoid the collision, the apply emergency braking. system will increase the braking force to Autonomous emergency braking (AEB) prevent or mitigate the collision. Activate and deactivate the forward collision Levels of autonomous emergency braking mitigation assist system (FCMS) ◇ Level 1 braking: Low brake when When the vehicle is started, the forward approaching the vehicle ahead. collision mitigation assist system (FCMS) ◇ Level 2 braking: High brake as the automatically activates both the warning vehicle gets closer. and braking functions. The system can also be configured to only activate the ◇ Level 3 braking: Full brake when a warning function or to be turned off entirely via the central console display. collision is nearly unavoidable. When the forward collision mitigation assist system (FCMS) is deactivated, the System limitations corresponding indicator lamp on the The forward collision mitigation instrument panel will illuminate. When the assist system (FCMS) may not function vehicle speed is ≥8 km/h, the forward properly under certain conditions, collision mitigation assist system including but not limited to: (FCMS) cannot be adjusted. ◇ The vehicle ahead has a very high Forward collision warning ground clearance, such as a semi- Setting warning sensitivity trailer. the forward collision mitigation ◇ After assist system (FCMS) is activated, ◇ The rear of the vehicle ahead is low, the warning sensitivity can be set to such as a low-platform trailer. "Far", "Medium", or "Near" via the ◇ The vehicle ahead has an irregular central console display. shape, such as a tractor or tricycle. Warning types ◇ Sudden changes in ambient brightness, ◇ Latent warning such as at the entrance or exit of a The distance warning is triggered - tunnel. when the vehicle is following ◇ The rear of the vehicle ahead is small, another vehicle too closely at a such as an empty truck.
Forward collision mitigation assist (FCMS)
stable speed, presenting a moderate collision risk. The instrument panel will display the corresponding target in yellow, accompanied by a warning sound.
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◇ The accelerator pedal is pressed deeply, ◇ A detectable object pattern is present in or the vehicle is rapidly accelerating. front of the vehicle. ◇ The auxiliary function is turned off or is ◇ The vehicle is overtaking or changing malfunctioning. lanes with a vehicle to the right or left. ◇ The Electronic stability program (ESC) ◇ The vehicle is overtaking a vehicle function has been manually turned off. preparing to turn right or left. ◇ The vehicle enters ESC control mode. ◇ A detectable object is present at the ◇ The area around the intelligent front curve entrance. camera or radar sensor is dirty or ◇ The vehicle changes lanes while obstructed. overtaking a detectable object. ◇ The vehicle is reversing. ◇ The vehicle approaches a detectable
◇ Driving under gantries, billboards, road ◇ Pedestrians are standing on a traffic signs, etc. island or in a curve. ◇ Approaching metal objects like manhole ◇ Pedestrians are partially or fully obscured covers, steel plates, steps, or bumps. by other objects, such as a worker holding a ladder or a pedestrian with an ◇ Approaching objects such as utility poles, guardrails, or trees near the roadside. umbrella. ◇ Pedestrians are wearing unusual clothing or masks, such as carnival costumes. ◇ The height of the pedestrian or cyclist ahead is less than 1 meter or greater than 2 meters.
◇ The detected object ahead makes sudden acceleration or deceleration, or turns. ◇ The detected object ahead suddenly cuts in front of your vehicle at a close distance. ◇ The vehicle ahead is a bicycle with an unusual shape, such as a child's bicycle or a tandem bike.
◇ The vehicle ahead is transporting objects that extend beyond its rear bumper. ◇ Driving at extremely high speeds.
◇ Driving on slopes.
◇ Driving on narrow curves.
◇ Driving in chaotic traffic conditions.
◇ Towing another vehicle.
◇ Pedestrians or cyclists are wearing oversized clothing (e.g., raincoats or long skirts) that obscures their silhouette. ◇ Pedestrians are pushing a stroller, wheelchair, bicycle, or other vehicles. are bending down, ◇ Pedestrians squatting, or cyclists are leaning forward.
◇ Poor visibility conditions, such as sunset, nighttime, snow, heavy rain, sandstorms, fog, or glare. ◇ Driving through steam or smoke.
◇ The vehicle is skidding, or driving on gravel roads or other slippery surfaces.
Situations that may trigger system activation when no collision is imminent:
target on a winding road or while changing its driving route.
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◇ Approaching parking lot barriers or other foldable barriers. ◇ Driving near objects that reflect radio
waves, such as TV towers, radio stations, power plants, etc. The forward collision mitigation assist system (FCMS) cannot always accurately detect objects and complex traffic situations. In such cases, the system may: ◇ Issue warnings or brake unnecessarily. ◇ Fail to issue warnings or brake when necessary.
WARNING
◆ The forward collision mitigation assist system (FCMS) is merely a driving assistance feature that can enhance your driving safety but cannot defy the laws of physics. Do not use the convenience provided by the FCMS system to engage in risky driving. Drivers must always drive cautiously, be prepared to apply the brakes, reduce speed, or avoid obstacles. ◆ T he FCMS system only triggers warnings and collision mitigation for vehicles, pedestrians, and two- wheelers detected by the radar sensors and cameras, meaning it may not react or may have a delayed reaction. Do not wait for the FCMS system to alert you or intervene with braking; drivers must apply the brakes proactively when necessary. You always bear the ultimate responsibility for safe driving and must comply with current traffic laws and regulations.
◆ T he FCMS system provides warnings and limited braking to help reduce collision injuries but cannot entirely prevent accidents or injuries.
WARNING (Cont'd)
Drivers must maintain control of the vehicle at all times, drive cautiously, and take full responsibility for their driving behavior. ◆ The FCMS system's detection capabilities cannot replace the driver's attention and judgment. ◆ Although the FCMS system is designed to help drivers avoid collisions or mitigate collision injuries, the system's effectiveness may vary depending on road conditions and driving behavior. Therefore, the system may not always perform at the same level; do not overly rely on this system and always drive cautiously. ◆ Do not attempt to test the FCMS system's functionality yourself. The system may not operate correctly depending on the characteristics of the detected objects (e.g., fake vehicles, fake pedestrians, or simulated detectable objects like cardboard cutouts) and the surrounding ambient light, leading to unnecessary accidents. ◆ In certain situations, if the FCMS system is triggered (either warning or active braking), forcefully pressing the accelerator pedal or turning the steering wheel will signal to the system that the driver is taking evasive action, potentially canceling the system's intervention. ◆ Avoid using the system under the following conditions, as it may not function properly and could result in unnecessary accidents or injuries:
When towing a vehicle.
When the vehicle is being towed.
When the vehicle is on a dynamometer, such as during vehicle inspections.
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WARNING (Cont'd)
When tires are improperly inflated or excessively worn. When tire chains are installed.
◆ If the ESC is manually turned off, the front collision mtigation assist system will also be disabled.
CAUTION
◆ If the FCMS system malfunctions (e.g., repeatedly triggers incorrectly), please disable the system and promptly visit a GAC Service Center for inspection and repair.
NOTE
◆ Pressing
the accelerator pedal or turning the steering wheel will terminate the forward collision mitigation assist system's alert.
NOTE (Cont'd)
◆ T he FCMS system operates within
a speed range of 8 km/h to 130 km/h. For pedestrians and two-wheelers, the FCMS system functions between 10 km/h and 80 km/h; for vehicles, the system operates between 10 km/h and 130 km/h. For pedestrians and two- wheelers, the active braking feature performs reliably between 10 km/h and 65 km/h; for vehicles, it performs reliably between 10 km/h and 80 km/h. Between 80 km/h and 130 km/h, the FCMS system may not prevent a collision but can provide a collision warning. (State 1)
◆ T he FCMS system operates within
a speed range of 8 km/h to 150 km/h. For pedestrians and two-wheelers, the FCMS system functions between 10 km/h and 80 km/h; for vehicles, the system operates between 10 km/h and 150 km/h. For pedestrians and two- wheelers, the active braking feature performs reliably between 10 km/h and 65 km/h; for vehicles, it performs reliably between 10 km/h and 80 km/h. Between 80 km/h and 150 km/h, the FCMS system may not prevent a collision but can provide a collision warning. (State 2)