How will driverless cars ‘talk’ to pedestrians? Waymo has a few ideas

The company’s autonomous vehicles are using visual cues, recorded audio messages, and, most recently, LED displays on its roof dome to communicate intent to other road users.

For years, developers have been working on ways for driverless cars to communicate intent to other road users, either through audio recordings or visual cues.

https://www.theverge.com/2023/10/13/23913251/waymo-roof-dome-communicate-intent-pedestrian-driver