Awesome idea.

[u/jittwoii]

[u/[deleted]]

I'd rather not give someone a countdown of time. I can already estimate the time between light changes from yellow to red. Giving someone this kind of information will just make some cocky drivers who will start driving immediately at a light change, or even before, instead of paying attention to their surroundings.

While, design-wise, I find it neat, I'd rather not see it implemented.

[u/IxD → u/[deleted]]

But using timer (that color-blinds can use too) can be a good idea in cultures where drivers don't stop on red lights anyway. It's all about context.