What is a Forward-Collision Warning System?

Chris Teague | Jan 31, 2023

Rear-end collisions are common, especially in areas where heavy traffic is an everyday occurrence. Even vigilant drivers sometimes lose focus, so automakers have stepped in with a technology that helps warn of approaching danger. A forward-collision warning (FCW) system, also known as forward-collision alert, may provide visual, audible, or other alerts when the vehicle is approaching an obstacle.

2019 Genesis G70 with Genesis Smart Sense with Forward Collision-Avoidance Assist

Some complain about “electronic nannies,” but the reality is that FCW and other technologies save lives and prevent collisions. The Insurance Institute for Highway Safety (IIHS) finds that FCW can reduce rear-end crashes by 27 percent. Automakers have caught on and are incorporating FCW and other advanced driver assistance systems (ADAS) into many new models as standard equipment. The result is several IIHS Top Safety Pick and Top Safety Pick+ award winners in all price ranges.

How Does Forward-Collision Warning Work?

Sensors in a vehicle’s front fascia enable FCW, and many newer models can detect vehicles and pedestrians. Some systems offer a wider field of view or longer reach than others, and automakers pair it with other safety features instead of providing it as standalone tech.

2023 Ram 1500 Forward Collision Warning-Plus

A forward-collision warning system determines the distance and position of people, vehicles, and other obstacles around the front of the car. Using the speed and distance from the danger, the system can alert the driver to brake when necessary.

What are the Types of Forward-Collision Warning?

Forward-collision warning systems generally take one of two paths: Vehicle detection or vehicle and pedestrian detection. Automakers have gravitated toward the more complete systems that offer pedestrian detection to offer more safety equipment in their vehicles. Many systems leverage, or are companions to, FCW. This is most common with automatic emergency braking (AEB), which works with FCW to apply brakes when a collision is likely.

Some vehicles come with intersection turn assistance and other features where sensors that detect vehicles and pedestrians are critical. Automakers wrap other FCW systems into more complex safety features incorporating adaptive cruise control and other features to create hands-free or semi-autonomous driving packages.

Which Cars Come with Forward-Collision Warning?

Many new models come standard with FCW. The problem is that many automakers use proprietary branding terms to describe safety equipment, making it difficult to understand what is and is not available. Audi includes its FCW system in its Pre Sense package; Honda builds it into its Honda Sensing suite of ADAS. Mercedes-Benz combines FCW and AEB and calls it Active Brake Assist.

Nissan Predictive Forward Collision Warning

If FCW is high on your list of vehicle features, take a close look at the standard equipment list. Some automakers call the tech out directly, making it easy for buyers, but others require research. Look for language that describes alerts or warnings related to obstacles in front of the vehicle. For example, Mercedes’ description states: “technology that can alert you if you’re approaching a vehicle ahead, or even some stationary objects, at a speed and distance that suggest a collision is likely.”

Summary

Forward-collision warning can make the difference between making it home safely and having a terrible day, so it’s a good idea to find a model with the safety kit you and your family can rely on. When you’re ready to jump in, head to the Shopping Guides section of our website to learn more about the safest new models.

Chris Teague is an experienced writer in the automotive and technology fields. In addition to JDPower.com, his work appears at Forbes, The Drive, Autoweek, and others.

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