Ask HN: Best pretrained OCR model for dashcam footage?

I'm trying to detect things like speed limits, stop signs, retail building signs from a relatively low quality dashcam. The video is 1440p, but the optics aren't great.

So far I've been using generic OCR models like [1] and [2], but the results aren't great.

[1] https://github.com/faustomorales/keras-ocr [2] https://github.com/JaidedAI/EasyOCR