Stopped in traffic on an incline, you have to learn how to not roll backwards. Presumably that’s what was meant.

Yeah, on the rainbow bridge port arthur texas. Here's an image:

https://www.panews.com/wp-content/uploads/sites/35/2020/09/W...

Even my 2011 Jeep manual transmission has hill start assist, it never rolls backwards .

Interestingly, it will roll forwards if you’re on a steep hill and trying to reverse up it. I guess it doesn’t know which way you want to go ( the computers don’t know what gear you’re in)