Several other highways across Turkey were closed as well.
Bolu Governor Ahmet Ümit said that the province had seen the heaviest snowfall since 1950.
While the snowfall continued to affect the whole country, the campaign "Stop the orders in the snow" was launched on behalf of motorcycle couriers.
The main opposition Republican People’s Party (CHP) Istanbul Chair Canan Kaftancıoğlu called out to the couriers and said, “If you are forced to work in unsuitable conditions, contact us, our legal commission will be at your side.”
Several precautions have been taken in Istanbul against the snowfall.
Istanbul Governor Ali Yerlikaya announced on Jan. 23 that “due to heavy snowfall and icing in Istanbul, motorcycles and electric scooters will not be used until the next announcement to ensure traffic and life safety.”
After speaking with university rectors, Governor Yerlikaya also announced that education and exams at the universities were suspended on Jan. 24 and 25.
According to the Turkish State Meteorological Service, the cold airwave will continue to affect Istanbul until Jan. 27.