Cannot read ?

[twobiker]

It's because many believe that roundabouts are an overtaking mechanism.

If it continued with two lanes after the roundabout I can see their point.

 

[Mad at urage]

The part about it is not recommended at high speed is rather contradictory for motorways is'nt it ?.

Lane closures on motorways fall into two categories: First are the long-term closures where a (usually reduced) motorway speed is maintained. These have narrow lanes with width restrictions, to maintain the same number of lanes through the obstruction. Second category are the temporary lane closures due to debris / collision / stranded vehicle etc. These generally cause the traffic to slow considerably on the reduced number of lanes and merging in turn is usually appropriate.

Most non-motorway lane closures are of the second category, even with roadworks; this is due to having insufficient space (usually) to maintain the same number of reduced-width lanes. Slow traffic at the lane closures again makes merging in turn appropriate. Of course if there is no congestion and speed is maintained, there's nothing to merge in turn with and the question doesn't arise .

 

[twobiker]

Lane closures on motorways fall into two categories: First are the long-term closures where a (usually reduced) motorway speed is maintained. These have narrow lanes with width restrictions, to maintain the same number of lanes through the obstruction. Second category are the temporary lane closures due to debris / collision / stranded vehicle etc. These generally cause the traffic to slow considerably on the reduced number of lanes and merging in turn is usually appropriate.

Most non-motorway lane closures are of the second category, even with roadworks; this is due to having insufficient space (usually) to maintain the same number of reduced-width lanes. Slow traffic at the lane closures again makes merging in turn appropriate. Of course if there is no congestion and speed is maintained, there's nothing to merge in turn with and the question doesn't arise .

 

[400bhp]

Agree with the positive lane merger people-this is a major drawback on Uk roads as people have an inability to understand that filtering means to the front of the obstruction, not half a mile back.

In the OP's case, is this the same issue though? The road has a right turn arrow on it. If it is the same issue then it is very poor road markings.