Before changing lanes to the left, which action should you perform?

Before changing lanes to the left, which action should you perform?

• A. Check your right mirror and look to the right.
• B. Check your left mirror and look to the left.
• C. Signal left before changing lanes.
• D. Delay the lane change until another vehicle signals you.

Answer: (B)

Before changing lanes to the left, you must scan the space in that direction to ensure it’s clear. Checking your left mirror and looking to the left lets you see vehicles in the left lane and check your blind spot, so you don’t move into traffic that’s nearby. This is the essential step to confirm it’s safe to move. The other options don’t help you verify the space you’re entering: looking to the right doesn’t address the lane you’re about to enter, waiting for someone else to signal isn’t a reliable safety check, and while signaling is part of the process, the immediate safety check for the left side is what’s required here.

Before changing lanes to the left, you must scan the space in that direction to ensure it’s clear. Checking your left mirror and looking to the left lets you see vehicles in the left lane and check your blind spot, so you don’t move into traffic that’s nearby. This is the essential step to confirm it’s safe to move. The other options don’t help you verify the space you’re entering: looking to the right doesn’t address the lane you’re about to enter, waiting for someone else to signal isn’t a reliable safety check, and while signaling is part of the process, the immediate safety check for the left side is what’s required here.