Car Language by Jaguar

Intriguing idea.  talking, conversation?   In one ways sounds absurd, but keep the design simple.

Jaguar is creating a language so autonomous cars can talk to pedestrians
By Ronan Glon  in Digitaltrend.

Autonomous cars will not be able to use hand gestures to communicate with pedestrians, which could lead to confusing situations at busy intersections. Jaguar Land Rover is working on creating a simple language driverless vehicles can use to tell pedestrians whether they’re stopping, turning, or cruising.

Instead of letters and numbers, the language is made up of a series of light bars projected onto the ground. The amount of space between each car gradually shrinks as the car brakes, and it expands again as it starts accelerating. The bars fan out left or right as the car prepares to turn in either direction. These signals are easy to understand anywhere in the world. It’s a better solution than the truly creepy eyes Jaguar tested in 2018 to allow pedestrians to make eye contact with autonomous cars.   .... "