When you change lanes:

Always accelerate to quickly merge into the next lane.
Look in the left side mirror.
Look into the rearview mirror.
Look over your shoulder in the direction you plan to move.
Explanation

Before changing lanes, check both side and rearview mirrors for traffic approaching you from behind. Use your turn signal to indicate your intention to other drivers. Just before you begin moving into the adjacent lane, quickly glance over your shoulder and check for any vehicles that may be in your blind spot.

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