| Clue | Source | Date |
|---|---|---|
| ___ & Allies (board game) | New York Times | 09 Jul 2023 |
| Red alert? | New York Times | 09 Jul 2023 |
| Eight-sided street-corner sight | Newsday | 03 Oct 2022 |
| Crossroad sight | Newsday | 26 Apr 2019 |
| Traffic advisory | Newsday | 01 Mar 2019 |
| Octagonal warning | Eugene Sheffer | 14 Jul 2018 |
| Octagonal road marker | Newsday | 27 Feb 2018 |
| Octagon at an intersection | The Washington Post | 20 Oct 2016 |
| Don't go there | Wall Street Journal | 12 Aug 2016 |
| Braking point | ||
| Reason to hit the brakes | ||
| Reason to hit the brakes | ||
| Traffic-light alternative | ||
| Light alternative | ||
| Red and white halter? | ||
| Red and white halter? | ||
| Light alternative | ||
| Reason to hit the brakes | ||
| Familiar octagon | ||
| Halter? | ||
| Halter? | ||
| Street-corner octagon | ||
| It brings traffic to a standstill | ||
| Halter, of a sort | ||
| Traffic halter | ||
| Corner feature | ||
| Traffic signal | ||
| Octagonal warning | ||
| Crossroad fixture | ||
| Motorist's concern. | ||
| Traffic regulator. |