Road Rules 2014
Current version for 29 November 2019 to date (accessed 26 May 2020 at 11:01)
Part 20 Division 1 Rule 316–2
316–2   NSW rule: do not overtake turning vehicle signs to be used only on vehicles 7.5 metres long or longer
(1)  A driver must not drive a motor vehicle if a do not overtake turning vehicle sign is displayed on the rear of the vehicle or on the rear of a trailer that is attached to the vehicle, unless the vehicle is, or the vehicle and trailer together, are 7.5 metres long or longer.
Maximum penalty—20 penalty units.
(2)  For the purposes this rule, a sign is a do not overtake turning vehicle sign even if it does not comply with the size requirements for such signs set out in rule 316–1.
 This rule is an additional NSW road rule. There is no corresponding rule in the Australian Road Rules. However, the Australian Road Rules allow another law of this jurisdiction to make provision for the kinds of long vehicles that may display such signs.