"border", not "boarder"
Also it's "borderline" one word, not "border line". It's a compound word.
A boarder is someone who boards at a boarding school.
A border is an edge, a boundary.
Reverse parking. It's mandatory on most mining sites that I have visited in Australia, for safety reasons. The miners love to slam it into reverse and crunch their gearbox as they back into a space. Not good for when you are going shopping and need to access the boot, however.