Out of the empty suburbs,
a highway with a relatively simple road,
Closed training ground,
Are these all the scenes of autonomous car unlocking?
When someone overtakes, the roads overlap,
Is it helpless to drive a car automatically?
I want to take a self-driving car to go for a ride, but if it is on the road where the self-driving car and the human-powered car exist, how can it be smooth and safe? RSS is a very practical method.
What is RSS? It is actually the “Responsibility-Sensitive Safetyâ€, which provides specific measurable parameters for the concept of autonomous vehicles and human liability, and through the behavior and environment involved in all recorded traffic accidents. Analytical statistics define a measurable "safe state" for autonomous vehicles. Autonomous vehicles with an RSS model can synthesize driving scenarios, drive with caution, and determine traffic responsibilities after an accident. In this way, the self-driving car can perfectly pass the test of various complicated scenes and take you around the world!
Perfectly solve the problem of following the car
Suppose there are two cars in the same straight lane. If the front car brakes and the rear car cannot brake in time, then the rear car is responsible for the accident. Using the RSS model, we were able to accurately calculate the distance that the rear car must maintain with the vehicle in front to maintain a safe state. This calculation depends on specific parameters, such as the different speeds of the two cars, and this data is accurately provided by different sensors on the self-driving car. Therefore, in the following scene, the self-driving car can be safe and there is no collision.
Perfectly complete overtaking action
The car scene is relatively simple, it reflects an intuitive principle, but if the front car is overtaking, the rear car hits the front car that enters from the rear. In this case, the front car is fully responsible.
The RSS model has been carefully designed to handle overtaking situations using the same principles. Autonomous vehicles will always maintain a safe distance from the surrounding vehicles based on a range of variables. If a human-powered car does not maintain a safe distance and collides, then the responsibility lies with the human-driven car. In addition, the AV can calculate the safe distance between other vehicles and the surrounding vehicles, and never issue a command to violate the safe distance. Therefore, even under complex overtaking actions, RSS can guarantee safety and clearly define responsibility.
Perfect handling of limited perception and occlusion of objects
There is a key component in the RSS system that allows the vehicle to drive with caution when the line of sight is limited.
Suppose a car tries to drive from the parking lot to the street, but the line of sight is blocked by a building. When humans drive, they choose to slowly flow into the traffic on the road, gradually expanding the field of view until the perception is not affected. When this happens in an autonomous vehicle equipped with an RSS model, the most reasonable speed and the point at which the traffic is most likely to occur are calculated and the vehicle is constantly changing according to the speed limit of the road. In addition, the autonomous car calculates the distance to allow other vehicles to have the opportunity to brake. At this time, if other vehicles are overspeeding and a collision occurs, the overspeed vehicle is fully responsible for the accident.
In the event of an accident in which a car collides with a pedestrian, it is usually the responsibility of the car, but there are also special circumstances. For example, according to the RSS system, autonomous vehicles will take into account the possibility of pedestrians suddenly rushing out of the two stopped vehicles at the maximum speed, and then control the speed of the self-driving car in order to brake in time and avoid hitting. pedestrian.
In addition to these situations, the RSS model also considers the addition of line priority, two-way traffic, traffic lights and unstructured roads, and hopes that one day, the application of the RSS model can be extended to all types of roads, providing a more comprehensive autonomous vehicle. Safety guarantees that autonomous vehicles can ride on the city road safely and unimpeded.
SHENZHEN CHONDEKUAI TECHNOLOGY CO.LTD , https://www.szsiheyi.com