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May 8, 2023

4 minutesmins



What is the “Do Not Overtake Turning Vehicle” rule?

Caravanning is a popular pastime for many people around Australia, offering the freedom to travel and explore the great outdoors. However, caravanning also comes with a responsibility to drive safely and follow the rules of the road. One important rule that all drivers should be aware of is the

“Do Not Overtake Turning Vehicle ” rule.

In this blog post, we’ll take a closer look at this rule and why it’s especially important for caravan owners.

What is the Do Not Overtake Turning Vehicle” rule?

The “Do Not Overtake Turning Vehicle” rule is a basic principle of road safety that applies to all drivers. It states that if you’re driving behind a vehicle that’s indicating to turn left or right, you should not attempt to overtake it. This is because the turning vehicle may need to lane filter and swing out wide to complete the turn, and if you’re alongside it, you could be at risk of a collision.

The rule applies to all types of vehicles, from cars and trucks to buses and caravans. It’s especially important for trucks and caravans, as they are longer and wider than most vehicles and require more space to manoeuvre.

As the owner of a caravan, this rule applies only if you have a Sticker, correctly mounted on the rear of your caravan to indicate this i.e.:  DO NOT OVERTAKE TURNING VEHICLE


So let go through the actual rules.

This is a quote from Transport for NSW

Overall length of 7.5m or greater

A caravan and towing vehicle with a combined overall length of 7.5m or greater is required to have a “DO NOT OVERTAKE TURNING VEHICLE” sign attached to its rear,  IF  the vehicle and caravan combination intend to momentarily occupy an adjacent lane (straddle) when making a turn.

Most people reading this miss one word – IF –   so to clarify

You only need the sticker            IF 

      •  the vehicle and caravan combination intend to momentarily occupy an adjacent lane (‘straddle’) when making a turn

      • Its not law that you have one if your over 7.5 m

      • However, it IS a requirement if you wish to lane straddle to turn.

      • Be aware also that most states prohibit the sign if you are less than 7.5m long.

    OK, now we shall clarify which signs you can display and where the signs should be placed.

    Preferred sign   (updated 1/12/23)


    IN NSW the sign must be a minimum of 450 mm x 150 mm


    In other states the 300 x100 signs are still acceptable. 

    The preferred sign should have a minimum area of 0.125 square metres, and the words “DO NOT OVERTAKE TURNING VEHICLE” should appear on the sign in block letters, with a height of not less than 50 millimetres. This sign is the most visible to other drivers, providing them sufficient warning to provide caravans and towing vehicles room to manoeuvre while turning.

    Other acceptable signs

    Alternate acceptable “DO NOT OVERTAKE TURNING VEHICLE” signs include one measuring  measuring 300mm by 300mm. 

    However for caravans (in NSW) we recommend the 450 x 150 mm sign.

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