Highway Code rule 185 clause 1 states:
When reaching the roundabout you should give priority to traffic approaching from your right, unless directed otherwise by signs, road markings or traffic lights.
However, there is no equivalently strong rule that says to give priority to traffic already on a roundabout (or other junction).
This creates a problem:
The vehicle emerging from the right is turning left. So you proceed onto the roundabout. The vehicle behind the one turning left shoots across and collides with you. Technically, without an 'already on the junction' rule, you are in the wrong.
A four-way mini roundabout. A vehicle arrives at each junction pretty-much simultaneously. Each gives way to the one to the right and comes to a stop. In practice, one driver proceeds and the lock-out is solved. However, he is now in breach of rule 185 clause 1. If the driver to his right was to accelerate and cause a collision, the first driver to move is in breach of rule 185.
There are other Highway Code rules which help but nothing seems to quite fix the problem:
Rule 185 Clause 3
When reaching the roundabout you should watch out for all other road users already on the roundabout; be aware they may not be signalling correctly or at all
But "watch out for" is not as strong as "give priority to".
Rule 187 Clause 2
In all cases watch out for and give plenty of room to traffic crossing in front of you on the roundabout, especially vehicles intending to leave by the next exit
Even if this is relevant, "watch out for" / "give plenty of room to" are again weak directives compared to "give priority to".
- Overview This section should be read by all drivers, motorcyclists, cyclists and horse riders. The rules in The Highway Code do not give you the right of way in any circumstance, but they advise you when you should give way to others. Always give way if it can help to avoid an incident.
"Always give way if it can help to avoid an incident" is helpful, but does it trump "give priority to traffic approaching from your right"?
The fact that, "The rules ... do not give you the right of way ... but they advise you when you should give way", might be the solution if it weren't for the fact that the 'give priority' rule is used to apportion blame where there is no independent witness despite compelling but disputable material evidence.
Have I missed a rule? Have I missed the point? Or is the Highway Code flawed in this respect?