Final answer:
When the right lane ends, it is best to merge into the left lane if it is safe to do so.
Step-by-step explanation:
When driving in the right lane and the lane ends ahead, it is important to merge into the left lane if it is safe to do so. This allows for a smooth transition and helps maintain the flow of traffic. Changing lanes abruptly to avoid merging traffic or speeding up to pass other vehicles before the lane ends is not recommended, as it can be dangerous and disrupt traffic.