How can you confirm if it is safe to merge into traffic?

Answer: A — Check mirrors, blind spots, and signal

To confirm if it is safe to merge into traffic, it is essential to check your mirrors, blind spots, and signal. This procedure ensures that you are fully aware of your surroundings and can make an informed decision before entering the lane. Checking your mirrors allows you to see vehicles approaching from behind and to the sides, while assessing blind spots is crucial because mirrors do not provide a complete view of the area around your vehicle. Additionally, signaling informs other drivers of your intention to merge, promoting safety by giving them time to react appropriately. None of the other methods provide adequate safety measures; solely checking the rearview mirror does not account for vehicles that may be in your blind spots. Waiting for a traffic light to change is irrelevant in situations where merging is necessary without a stop signal. Merging without checking puts you and others at risk and could lead to accidents. Thus, the comprehensive approach of checking mirrors, blind spots, and signaling is the safest and most responsible way to merge into traffic.