Driverless cars are vehicles that are self-driving and able to navigate(行驶于) the environment without requiring a human. They are also referred to as robotic cars and self-driving cars. Here are some facts about driverless cars.

　　*They are able to recreate roadways in three dimensions.

　　*They must recognize pedestrians(行人), road signs, other vehicles, and traffic lanes in order to function.

　　*A driverless car would be capable of functioning without human intervention (干预) of any kind.

　　*The first driverless car model was operated by Google under Alphabet Inc. in 2015.

　　*It has been estimated that by 2050 almost all vehicles on the road will be driverless.

　　*Human error accounts for roughly 90% of accidents on roadways. The creation of driverless cars was in an effort to reduce accidents.

　　*One of the major issues for driverless cars is the weather. When the weather is bad, it results in a huge amount of data that must be processed and it can affect the process.

　　*Driverless cars could help eliminate the issue of drunk driving.

What are driverless cars also called?

Robotic cars and _______________.