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.
right lane
watch for cars entering the expressway; if you stay in the right lane, adjust your speed or move into the center lane so they can enter safely
They are generally required to be in the right lane, and only move left to pass.
When you are in the far right lane, your turn should put you in the far right lane. Then, when safe, you can merge into the left lane to pass. This is for a right turn from a 2 or 4 lane onto a 2-or higher lane road.
deceleration lane
The number one lane
driving is not permitted in that lane
(in the US) On multi-lane roadways - The far right lane
yes
#1 lane. The lanes are numbered from left to right. buzzstocks.com
Deceleration lane AKA, Ramp
Yellow