The default assumption is "overtake on the right, always," which makes the exception feel like a trick question when it shows up.
Here is one worth locking in:
Is it ever legal to overtake a vehicle on its left side?
Yes, if the vehicle ahead is signaling and moving to turn right, or if you're in a lane that is itself moving faster than the lane to your right, such as in multi-lane traffic. This is one of the more commonly misunderstood exceptions, since "always overtake on the right" is the rule most learners memorize without the caveat.
Beyond this exception, this category also covers safe following distance before initiating an overtake and when overtaking becomes illegal regardless of side.
Your turn. If there is an overtaking scenario you keep mixing up, post it here. If you know the answer to someone else's, help them out.
