On any road with three or more lanes in one direction, what restriction does point 57 place on trucks with a maximum authorised mass exceeding 3.5 tonnes and on scheduled passenger transport?

1. They may use any lane without restriction.
2. They are prohibited from using the extreme left lane, except when preparing for a left turn or a U-turn.
3. They must drive only on the sidewalk.
4. They are not permitted to drive inside built-up areas at any time.