You should check your mirrors

  1. whenever you plan to change road position.
  2. every few seconds.
  3. before you slow down or stop.
  4. All of the above ✓

Answer: D. All of the above

You should check your mirrors every few seconds, before you slow down or stop, and whenever you plan to change road position, so all of the listed choices are correct.

Why this is the answer

The handbook says your mirrors show what is happening behind you and lists three times to look: regularly every few seconds; before slowing or stopping, so traffic behind has room; and when you plan to change position or direction, to check that no other road user has moved beside you. Because the correct choice includes all three situations, the all-of-the-above answer fits.

Why the other answers are wrong

Remember it

Tie each mirror glance to a moment: time passing, braking, and moving over.

Official handbook: ICBC Learn to Ride Smart, Chapter 6: see-think-do – see, p. 69

Explanation drafted with AI (deepseek-flash) from the official handbook passage cited above, then checked automatically and by a second model on 2026-10-23. Always confirm with the official handbook.