There are two traffic lanes moving in your direction. You are driving in the left lane and many vehicles are passing you on the right. If the driver behind you wishes to drive faster, you should:

  1. Stay in your lane so you don't impede the flow of traffic.
  2. Drive onto the left shoulder to let the other vehicles pass.
  3. Move into the right lane when it is safe. ✓

Answer: C. Move into the right lane when it is safe.

You should move into the right lane when it is safe to do so.

Why this is the answer

The handbook addresses this exact situation. It says that when another driver is close behind you and wants to go faster, you should move to the right, and that if you choose to drive slower than other traffic, you belong in the right lane. Since traffic is already passing you on the right, staying on the left is what blocks the normal flow, so the fix is to shift right once you can do it safely.

Why the other answers are wrong

Remember it

Think of the left lane as the passing side: if others keep going around you on the right, you are the one who needs to shift over.

Official handbook: California Driver Handbook (DL 600), Section 7: Laws and Rules of the Road, p. 50

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.