Hyundai developed two driver assist system to help the deaf and hard of hearing, Audio-Visual Conversion and Audio-Tactile Conversion.
It was revealed in full earlier this and demonstrated in the "Silent Taxi" project posted below by using an actual deaf taxi driver. The video for it was so good that Hyundai won some film awards shortly after it went live. Knowledge of this tech was around over a year ago. Patents were filed back in Oct 2018 and provide more technical info. If you're interested in that keep scrolling but the video explains enough.
As someone that lives in the city and comes across a lot of deaf/heard of hearing people I think its great Hyundai did this.