Some courses will be longer than others due to state or provincial requirements. The amount of chapters in a course also varies on the course you take as well as your state requirements. Typically, you can expect to spend between 4 to 8 hours to complete a traditional safety course. The interactive premium course is faster than the traditional one, ultimately the student's knowledge and learning abilities will determine how quickly the course can be completed, but it can be done within three to four hours.