The truck driver carries a special license, as the law 'requires' (him to do). = The truck driver carries a special license, 'as required by' law.
What will be 'required' of me if I accept the job? = What will I be 'required' to do if I accept the job?
The newspaper is 'required reading' [=reading that must be done] in my politics course.
(..) Dialogue: Marked=..,Default,NTP,!Effect,Unless you'd rather stay, of course. Dialogue: Marked=..,Default,NTP,!Effect,''First year's students will require\Nthree sets of plain work robes... Dialogue: Marked=..,Default,NTP,!Effect,...one wand.'' (..)2001 Harry Potter and the Sorcerer's Stone