A new rule for motorists and cyclists has the potential to cause 'confusion and dangerous situations', according to the AA.
The new Highway Code rule change due to be introduced in the new year will mean motorists have to give way to cyclists and pedestrians at junctions.
But after surveying more than 13,000 drivers, the AA said it found only a third were aware of the change, which comes into force on January 29.
Under the revised rules, which will become law subject to parliamentary approval, drivers and cyclists must give way if pedestrians are waiting to cross the road into which or from they are turning. Motorists must also give way to pedestrians and cyclists on a parallel crossing.
The original Highway Code gave vehicles priority at junctions, so pedestrians only had right of way if they were already on the junction road.
The AA told the MailOnline people should understand the new rules ahead of time, "because any confusion is likely to lead to avoidable collisions".
For their safety, cyclists must also ride in the centre of the lane when approaching junctions and on quiet roads.
The updated Highway Code will also offer guidance on safe passing distances and speeds when overtaking cyclists and horse riders.
The rule is being introduced as part of a 'hierarchy of road users', which recognises that road users who pose the greatest risk to others have a higher level of responsibility and the greatest responsibility to reduce the danger or threat they may pose to others.
The change means drivers will have a greater responsibility to look out for cyclists, pedestrians and horse riders, while cyclists will have a greater responsibility to look out for pedestrians.
A spokesman for the Department for Transport said: "The proposed upcoming changes to The Highway Code will improve safety for cyclists, pedestrians and horse riders and were widely reported when they were announced earlier this year."
To view the updated Highway Code rules, click here.
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