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.
(..) And I want to welcome you all to Phoenix Club's first party of the fall semester! Lowell has some security. They require a user name/password combo, and I'm gonna go ahead and say they don't have access to the main FAS user database, so they have no way of detecting an intrusion. (..)2010 The Social Network