Hi Anthony,
I would add more motivation factors in every section. And make the course more task-oriented instead of a huge information pack. A conversational design by adding a character coach and making users feel like someone in this course talks with them, instead of reading cold compliance rules. Having the virtual coach ask questions that users will care about in their daily life to make them think before receiving the information that they need to know.
BTW, the tone of the text might be better using spoken rather than written ones, especially if the target audience is truck drivers.