| Answer | Crossword Clue |
|---|---|
| SINGLELANEAHEAD | Highway warning |
| FLARE | Highway warning |
| BEEP | Highway warning |
| HORN | Highway warning |
| SLO | Highway warning |
| SLO | Highway warning. |
| CLICKITORTICKET | Highway warning |
| SLOW | Highway warning |
| NOENTRY | Highway warning |
| NOUTURN | Highway warning |
| HONK | Highway warning. |
| MERGE | Highway warning |
| LOWBRIDGE | Highway warning sign |
| CUTSPEED | Highway warning sign |
| SLO | Highway warning sign |
| EXITONLY | Highway warning sign |
| BUMP | Highway warning sign |
| DONOTENTER | Highway warning sign |
| DANGEROUSCURVES | Highway warning sign |
| TOOT | Warning on a highway |
| SINGLELANEAHEAD | Highway warning sign message |
