What's the law when joining a dual carriageway from a slip road?

When driving on motorways or dual carriageways recently on a number of occasions I have had to avoid an incident as drivers just move straight on to the roadway without indicating or consideration of those in the nearside lane. Has the law changed?

Asked on 28 March 2017 by DVR

Answered by Honest John
No, the law of common sense has never changed. Considerate drivers on the carriageway can see that vehicles on the sliproads want to join and should make allowances such as pulling to the right (if they can) or braking (if they can).
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Surely on a slip road one should give way to a lane they want to enter? Braking for a vehicle wanting to join could cause an accident. One has to be aware what is legal as well as sensible.
 

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