Learn Turkish: Yollardaki buzlanma için önlem alsanız iyi olur. - You had better take precautions for the icing on the roads.

This is a common structure for giving advice or making mild suggestions. It literally means "if you take (alsanız), it will be good (iyi olur)". English speakers naturally translate this as "you should" or "you had better". The conditional suffix -sa / -se paired with iyi olur is the standard formula for this kind of advice.

Why is there a -ki at the end of yollardaki?

The suffix -ki is used to turn a location or time into an adjective. Here, yollar means "roads" and -da is the locative suffix ("on"), so yollarda means "on the roads". Adding -ki creates the adjective yollardaki ("the ones on the roads"). Therefore, yollardaki buzlanma specifically means "the icing that is on the roads".

How is the word buzlanma (icing) formed?

It starts with the root noun buz (ice). Adding the suffix -lan turns it into the verb buzlanmak (to become icy / to freeze over). Finally, adding the verbal noun suffix -ma turns it back into a noun: buzlanma, which means "the act of icing" or "freezing".

Is önlem almak a set phrase?