Can accidents caused by drowsiness also occur during the day?

To have an accident due to drowsiness, it is not necessary to actually fall asleep, as the risks of sleepiness appear much earlier. Furthermore, these accidents do not only happen at night, as there are many circumstances that cause drowsiness during the day. For example, monotonous situations, heavy meals, high temperatures inside the vehicle, etc. The times of day that promote drowsiness are the early morning hours (3 to 5 a.m.) and the early afternoon hours (2 to 4 p.m.).