| Clue | Source | Date |
|---|---|---|
| Reduced-speed road sign symbol | LA Times Daily | 05 Dec 2021 |
| Graph of diminishing returns | Newsday | 22 Aug 2020 |
| Snaky shape | Premier Sunday | 06 May 2018 |
| Display of diminishing returns | ||
| Two-direction section | ||
| Double bend | ||
| Winding road section | ||
| Sign on a mountain road | ||
| Sinuous figure | ||
| Type of highway bend. | ||
| Road turn |