Who is at fault when a rear-end collision is caused by the front car suddenly braking?

[ORiley]

The rear car is at fault. Below are explanations of several common rear-end collision scenarios: 1. Rear-end collision caused by the front car reversing or rolling backward: These two types of rear-end collisions also frequently occur, usually when waiting at traffic signals. The front car may not have engaged the foot brake or mistakenly shifted into reverse gear, or the vehicle may roll backward when starting on a slope. In both cases, the front car bears full responsibility, provided the rear car did not move before the collision occurred. 2. Emergency braking by the front car: If the rear car maintains a safe following distance, a rear-end collision can be avoided. However, a complete determination requires reviewing the rear car's driving footage. If the front car intentionally braked suddenly, the front car may also share some responsibility. 3. Rear-end collision caused by the front car changing lanes or cutting in: Overtaking or changing lanes must not affect normally moving vehicles. In such cases, regardless of whether lane changes are permitted on that road section, the vehicle changing lanes bears full responsibility for the accident, while the normally moving vehicle is not at fault.

[McBrayden]

I've been driving for over a decade and witnessed many rear-end collisions. In most cases, the following vehicle bears full responsibility because traffic regulations clearly require maintaining a safe distance. There's always a reason when the lead vehicle brakes suddenly – perhaps avoiding pedestrians or unexpected situations. I remember last year when my friend was tailgating, the car ahead braked abruptly for a darting dog, and he crashed into it. The traffic police held him fully liable, requiring him to pay for the other car's repairs. This incident reminds us to maintain at least a three-second following distance daily, especially in urban areas with faster speeds, allowing sufficient reaction time. Even if the lead vehicle brakes suddenly without reason, it's extremely difficult for the following driver to provide evidence, as dashcams might not capture what's happening inside the leading vehicle.

[McCayden]

When I first got my driver's license, I was particularly afraid of rear-end collisions. My instructor repeatedly emphasized maintaining a safe distance. In the event of an accident, the insurance company first checks whether the following vehicle maintained sufficient distance. There are many situations where the car in front suddenly brakes, such as a nervous novice driver mistakenly pressing the wrong pedal, or an experienced driver encountering potholes and braking abruptly. I have a colleague who followed too closely, and when the car in front braked suddenly to avoid a cat, he didn't react in time and crashed into it, denting the front of his car. In the end, he had to pay over six thousand for repairs. So, I recommend that new drivers practice braking techniques more during their novice period and increase the following distance to more than five seconds on rainy days.

[DiCamilla]

Having handled numerous accident cases, rear-end collisions are over 90% the fault of the following vehicle. Traffic laws stipulate that the following vehicle must maintain a safe distance. As long as the leading vehicle isn't intentionally reversing or driving without a license, sudden braking doesn't count as a violation. The key points are: whether the following vehicle was speeding or distracted, and if the leading vehicle's brake lights were functioning properly. Last week, there was a case where the leading vehicle's brake lights were out, and the following driver was distracted by their phone and didn't notice, resulting in them being deemed primarily at fault. It's recommended to check the braking system annually and pay attention to the movements of the vehicle ahead while following, such as sudden steering which might indicate avoiding an obstacle.

[VanKevin]

On the way to dropping off my child at school, I've witnessed several rear-end collisions, mostly because the following car was tailgating too closely. The lead car might suddenly brake because the driver dropped their phone and bent down to pick it up, or another car suddenly cut in. Last time, I almost rear-ended a taxi that abruptly stopped to pick up passengers—fortunately, I habitually maintain a distance of four car lengths. Remember, at 50 km/h, the safe following distance should be at least 25 meters, and it should be doubled on highways. If a collision does occur, not only does the following car's insurance have to cover the repair costs for the other party, but the insurance premium could also increase by about 30% the following year.

[McLorenzo]

I've worked in an auto repair shop for five years and have repaired hundreds of rear-end collision vehicles. The basic pattern is that when the rear car's bumper is severely damaged, the front car bears less responsibility. As long as the front car isn't reversing or maliciously cutting off the rear car during sudden braking, the rear car is almost always fully at fault. The key issue is that the rear car driver didn't leave enough braking distance, often because they were looking at navigation or adjusting the AC while following. When there's oil or water on the road, the braking distance can more than double. Once, a client rear-ended another car in the rain—even at just 40 km/h, they couldn't stop in time. I recommend checking brake pad thickness every 20,000 km, and older cars should pay extra attention to brake fluid condition.