How can he use his rear view mirror with that sign?
I passed my test less than two months ago. Today I had the school run - thirty minutes each way in rain. I am still recovering, and as far as I can tell, none of it was my fault. I had two drivers pull out in front of me, which worried me. I was driving more or less at the speed limit but there wasn't anyone behind me so I could stop okay. And while I was facing uphill, steep slope, traffic lights, I had someone so close to my rear that one more inch would have been adultery. I was terrified starting off, as there wasn't room for error. Of course I managed it, as I do the run twice every school day, and I paid a lot of attention to my instructor, but it isn't fun.
This is why I have P plates - so that people know that if they pull out in front of me, or they are really close when I am stationary facing up a hill, I don't have the experience to deal.
And I'm still regularly tailgated when I'm at the speed limit or driving a difficult part of the route so I firmly support anything that says 'cut this driver some slack and take a breath' and that doesn't obscure the driver's view.
Mind you, some of my older relatives should have had their keys confiscated a lot earlier. I plan to stop when I don't have to do the school run.