Your car breaks down and blocks part of the carriageway on a rural PNG highway. What do the Road User Rules 2017 allow and require you to do?

1. Any person may erect a warning triangle to warn approaching road users, and you must not leave the vehicle standing so as to obstruct traffic
2. Only a Traffic Enforcement Officer may place any warning device on a public street
3. You must leave the vehicle exactly where it stopped until the RTA inspects it
4. No warning is needed provided the hazard lights are switched on