| Answer | Crossword Clue |
|---|---|
| TAILGATING | Road no-no |
| UTURN | Road no-no, maybe |
| RTE | Road no. |
| UTURN | NO .. (road sign) |
| RTE | Road map no. |
| RTE | Road-map no. |
| RTE | Road sign no. |
| RTE | Road with a no. |
| ONRED | No right ..: road sign |
| ONRED | NO TURN .. (road sign) |
| RTE | No. on a road sign |
| PANDERER | No high-road taker, he |
| GEOMETRY | "There is no royal road to .....": Euclid |
| EUCLID | Who wrote to Ptolemy I "There is no royal road to geometry" |
