Some loose stones remain on the road surface for some days. In theory the weight of vehicles passing over the loose stones again and again will squash them in to the bitumen to finish off the new road surface. As you might guess, the edges of the roads in Stalbridge that have been re-surfaced this way may not get much traffic and therefore take a long time to 'bed down'.
It seems that there are some good reasons for using this method. Apparently:
It provides a non-skid and therefore safer road surface.
It seals and waterproofs the road.
It can extend the life of the road surface by over 10 years.
In addition, there seem to be cost benefits to using this method:
it is a relatively quick process.
It is also substantially cheaper than other methods of maintaining roads.
And the disadvantages of this method?
We will leave those up to you to discuss!
And if you have got to the end of this without falling asleep.....
Here is a video of someone explaining everything about it...entitled "Getting a grip on Surface Dressing"