| Answer | Crossword Clue |
|---|---|
| ICIEST | Most dangerous, as winter roads |
| ICIER | More dangerous, as some winter roads |
| ICEUP | Become dangerous, as roads |
| ICY | Slippery, as winter roads |
| ICY | Treacherous, as winter roads |
| ICIER | More slippery, as winter roads |
| ICIER | More hazardous, as winter roads |
