This is the 16826th most frequent Russian word.
снижаться
To decrease; to decline; to go down.
Here, 'снижаться' is used to describe a gradual decrease in the quantity or level of air temperature.
Температура воздуха начала снижаться к вечеру.
The air temperature began to drop in the evening.
In this sentence, 'снижаться' relates to a reduction in a statistical rate, indicating improvement.
Процент безработицы стал снижаться благодаря новым программам.
The unemployment rate started to decline thanks to new programs.
'Снижаться' in this context refers to the lowering or reduction of the count of cars present on roads during specific times.