This is the 3166th most frequent Russian word.
мешает
" мешает" means "interferes" or "hinders."
Here, "мешает" is used to signify interference or obstruction, indicating that someone's actions make it difficult for another person to concentrate.
Она мешает мне сосредоточиться.
She is preventing me from concentrating.
In this context, "мешает" describes a physical hindrance caused by the snow affecting traffic flow.
Снег мешает движению на дорогах.
The snow obstructs the movement on the roads.
Here, "мешает" conveys the idea of an object or condition preventing or making it difficult to accomplish something.