When should you move from the right lane on a multi lane Expressway?

You should move from the right lane on a multi-lane expressway when you need to overtake slower vehicles or when you're preparing to exit the expressway. Generally, the right lane is designated for slower traffic, so if you're traveling at a higher speed, it's safer to use the left lanes. Always signal your intentions and check your mirrors and blind spots before changing lanes. Additionally, ensure it's safe to merge back into the right lane after overtaking.