Standardised is a funny word, a car manufacturer doesn’t standardise. Laws and 3rd parties like ANCAP do.

When they need to do it to sell it with certain safety requirements, they will.

However, even if those happen, and car makers today start building them with that, it’ll take a decade or longer before you’ll start seeing them in majority on the road. So even if you lobby for it, expect time since I’d say less than half of all people buy new cars, so it’s not until the second hand market sees it will it be commonplace.

Right now the second hand market is starting to see things like collision avoidance systems and they will often flash brake lights when emergency braking on behalf of the driver.