Final answer:
To safely turn from the wrong lane, signal well in advance, check mirrors and blind spots, then merge smoothly into the desired lane if it's safe. Avoid sudden changes and plan your route ahead.
Step-by-step explanation:
When you find yourself needing to turn but are in the wrong lane, it's important to approach the situation with safety as your priority. What should you do if you're turning but need to be in a different lane? First, you must indicate your intention to change lanes by using your turn signals well in advance, giving other drivers ample notice of your desire to switch lanes.
Next, check your mirrors and blind spots for other vehicles to ensure it is safe to merge into the desired lane. If it is safe, smoothly and gradually move into the correct lane, keeping your speed consistent with the flow of traffic. It's essential to never make sudden or erratic lane changes, as these can cause accidents. Planning your route ahead of time can also help avoid last-minute lane changes.