Unfotunately, the only thing you can do when a parent is irresponsible is to encourage and teach the kids to be responsible for themselves. Remind and tell the kids how important these things are for their safety so they will be the ones insisting on them. I know that's sad, but sometimes kids have to learn to take up the slack when parents aren't acting responsibly.
One positive thing, these kids who learn to take care of themselves early usually grow to be much more responsible....
There is no arriving, ever. It is all a continual becoming.