CDL Prep prepares the theoretical exam for the United States commercial driver’s license. Question bank with citation from the official manual, simulator with the real rules of the state you choose, spaced repetition on what you get wrong, and the manuals of the 51 jurisdictions for offline reading.
Studying for the CDL has a problem that isn’t the syllabus: it’s distrust. Question banks copied from other banks circulate, without indicating where each answer comes from, and with rules that are not those of the
