In the past, before automatic gear became common, some of my friends did not even dare go parking in certain shopping malls because they were so afraid of “climbing hill”, due to their poor driving skill.
However, driving our car downhill is also not that easy in certain places. I have been noticing those black bumper marks on the wall next to these lanes. I am quite amused coz I see the high correlation between the density of these bumper mark and the challenging level.
The trainer can use this as a guide to teach their students. JPJ also can consider include this in the driving test.