This sign (right lane ends keep left) means:

  1. Merging traffic is approaching from the right
  2. Winding road ahead
  3. Right lane ends, stay to the left ✓
  4. Divided highway ahead

Answer: C. Right lane ends, stay to the left

The sign means the right lane ends ahead, so keep to the left.

Why this is the answer

The road signs list in the manual pairs "Right lane ends" with the instruction to stay to the left. That wording tells you the lane you may be driving in on the right side is going away, so you need to be positioned in the remaining lane rather than waiting until the lane runs out. The other entries in that same list are separate signs with their own meanings, such as the yield sign for merging traffic entering from the right.

Why the other answers are wrong

Remember it

When the right lane disappears, read the sign as an instruction, not just a warning: get left early.

Official handbook: New York State Driver's Manual (MV-21), Road Signs You Must Know

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.