That's easy enough. As humans, we have the ability to look ahead and estimate the impact of our actions - which is something you've implicitly acknowledged in your question. Therefore, we can choose the best course of action.
The really difficult part is knowing what is best for other people. They often don't share my opinions on what's good and what's bad -.-
It's right if it brings happiness to yourself and the world, it's wrong if it brings pain to yourself and the world.
It is also right to follow rules if you don't have a clear understanding of the situation, because (hopefully) those rules were made with an expertise that you don't posses.
Right, but then the machine gets dirty or the water it uses gets dirty, or the rubbish bin you threw it into gets dirty. Where does it end? Kinda fucked up ngl
Ouch that looked really bad. These drivers are so brave to get back in and drive again after an accident like that