Confusion about road rules can be not only frustrating, but dangerous.

Confusion about road rules can be not only frustrating, but dangerous. Photo: Michel O'Sullivan

Should slow cars keep left? Do you need to indicate at roundabouts? And are you allowed to drive through a yellow light?

These are just some of the road rules likely to have NSW drivers scratching their heads.

Transport for NSW says rules on driving on roundabouts are some of the most misunderstood in the state.

Transport for NSW says rules on driving on roundabouts are some of the most misunderstood in the state.

To clear up the confusion, Roads and Maritime Services on Tuesday released a list of the top 10 misunderstood road rules as part of the state's first road rules awareness week.

NSW Roads Minister Duncan Gay says confusion about road rules can lead to frustration but it can also be dangerous.

"The most dangerous [of the 10] is leaving your lights on high beam approaching someone or following someone," Mr Gay told reporters in Sydney on Tuesday.

High beam is not permitted if travelling less than 200 metres behind a car going in the same direction or less than 200 metres from an oncoming vehicle.

"The most frustrating [misunderstanding] is people staying in the right-hand lane rather than moving left," Mr Gay said.

"The rules are quite clear: unless you're overtaking or making a U-turn or turning to the right you must stay in the left-hand lane over 80km an hour and if it's signed, even under 80km an hour."

Other road rules that are poorly understood include drivers having to stop at yellow traffic lights if it is safe to do so and when approaching a roundabout, using indicators if turning left, right or making a U-turn.

The guide was developed by the Centre for Road Safety from community feedback.

AAP

Correction: A previous version of this article referred to drivers making 360-degree turns. This has been clarified as U-turns.