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.
(..) Yeah. Get going. I'll handle him. Creedy. What are you doing here? Several prominent party members have been murdered, chief inspector. This is no ordinary situation and requires more than your ordinary attention. The chancellor demanded my immediate involvement. It'll be hard to investigate (..)2005 V for Vendetta