They're likely under a tree protection order, meaning no works to be carried out that could interfere with root structure or risk killing the tree. Every tree species has an average root radius calculated. That number, if I remember rightly, is the minimum distance any works may be done, from said tree.
The chances are, the road was there long before the regulations came in to effect, and since then the wall has had to be built to prevent a maturing line of trees from leaning/falling across/near the road.
The wall may be within the tree's root radius already, works can't be don't to alter the wall, therefore the wall won't be going anywhere fast.
I might be wrong, but I think that's the gist of it. Health and safety for everyone probably trumps a few cyclists in this case, and trees falling on roads isn't good for anyone
They're likely under a tree protection order, meaning no works to be carried out that could interfere with root structure or risk killing the tree. Every tree species has an average root radius calculated. That number, if I remember rightly, is the minimum distance any works may be done, from said tree.
The chances are, the road was there long before the regulations came in to effect, and since then the wall has had to be built to prevent a maturing line of trees from leaning/falling across/near the road.
The wall may be within the tree's root radius already, works can't be don't to alter the wall, therefore the wall won't be going anywhere fast.
I might be wrong, but I think that's the gist of it. Health and safety for everyone probably trumps a few cyclists in this case, and trees falling on roads isn't good for anyone