| Clue | Source | Date |
|---|---|---|
| Common name for the audio tactile profiled marking a road safety feature (6.5) | ||
| Makes for a 'tiring' warning, driver? (6,5) | ||
| Feature of road safety guidelines saving boy after a little mishap on journey (6,5) | ||
| Road safety feature | LA Times Daily | 26 Dec 2021 |
| Aid for a sleepy driver | Wall Street Journal | 10 Sep 2019 |
| Aid for a sleepy driver | ||
| Raised piece of corrugated pavement | The Washington Post | 14 Nov 2015 |
| Raised piece of corrugated pavement |