When you are planning a change in direction, you should

1. signal.
2. do a shoulder check.
3. check your mirrors
4. All of the above ✓

Answer: D. All of the above

All of the above: when you plan a change in direction, you should signal, do a shoulder check, and check your mirrors.

Why this is the answer

The handbook says to look in your mirrors whenever you plan to change road position or direction, and to shoulder check so the blind spot on that side is clear. It also says to use a mirror and shoulder check when you turn or change lanes, and it lists signaling among safe riding habits. A direction change is not just one glance; you need to know what is behind you, clear the area beside you, and make your intention clear.

Why the other answers are wrong

• A. signal. — Signaling by itself does not clear the blind spot or tell you what is behind you, so it is only one part of the checks the handbook describes.
• B. do a shoulder check. — A shoulder check by itself leaves out the mirror check the handbook calls for whenever you plan to change road position or direction.
• C. check your mirrors — Checking your mirrors by itself does not cover the blind spots beside you, which the handbook says to clear with a shoulder check.

Remember it

Think mirror, signal, shoulder: check all three before you move.