| Clue | Source | Date |
|---|---|---|
| Traffic signals | Commuter | 12 May 2025 |
| Red traffic signals | Newsday | 18 May 2020 |
| Colloquial term for traffic controls featuring the colors in 18-, 26-, and 50-Across | The Washington Post | 21 Apr 2016 |
| Controllers of traffic flow | USA Today | 30 Apr 2015 |
| Controllers of traffic flow | ||
| Controllers of traffic flow | ||
| Traffic control devices | ||
| Motor vehicle features | ||
| They turn at busy intersections | ||
| Red signals |