Learn Turkish: Arabada emniyet kemeri takmak gerek. - It is necessary to wear a seatbelt in the car.

takmak gerek means "it is necessary to wear" in a general sense, for anyone. If you wanted to say "I need to wear," you would use the verbal noun with a personal ending and say takmam gerek (my wearing is necessary). Because this sentence states a general rule, we just use the plain infinitive -mak with gerek.

Why do we use takmak for wearing a seatbelt instead of giymek?

giymek is only used for actual clothing that you dress your body in, like a shirt, pants, or shoes. For things that you attach, fasten, or hook on (like a seatbelt, glasses, a watch, or jewelry), Turkish uses takmak.

Why is there an -i at the end of emniyet kemeri?

emniyet kemeri is a noun compound meaning "safety belt." When you put two nouns together in Turkish to create a single concept, the second noun requires a possessive suffix. Here, kemer (belt) takes the -i ending to link it to emniyet (safety).

Can I use lazım instead of gerek here?

Yes! You can say Arabada emniyet kemeri takmak lazım and it means exactly the same thing. Both gerek and lazım are highly common and can be used interchangeably with the infinitive to express general necessity.