On 19/02/18 18:55, Tim Streater wrote:
In article , Nightjar
wrote:

On 19-Feb-18 2:14 PM, DerbyBorn wrote:
Was thiunking as I drove along a lane with deep ruts where the tarmac
met
the grass - and wondering what damage it may have done to the vehicle -
that such lanes are a problem - the tarmak crumbles at the edges and
keeps
breaking away.
Clearly constucting a road with curbs (kurbs?) woudld be costly - but
having seen a machine continuously casting a centre barrier I
wondered is a
machine could do it.

Imagine a rotating trenching mechanism - toothed wheel - followed up
by a
concrete mixing and filling machine - possibly dropping in some
reinforcement.

Could it work?

The problem with kerbs is that they trap water and require drainage to
be added. The simpler solution is to build the roads a couple of feet
wider and paint a white line a couple of feet in from the edge.

Good luck with that round here, such as at 51 15 53N, 1 04 08E. In
general your solution would require digging out banks and tearing down
hedges. Here's another where passing (even by cars) is just possible if
you drive up the bank: 51 12 20N, 0 59 07E.

Ah. A year or so ago I met a fuel anker on such a road and was
treavveling too fast to stop, But the trusty 4WD scraped past at 45
degrees with two wheels up the bank.


--
Theres a mighty big difference between good, sound reasons and reasons
that sound good.

Burton Hillis (William Vaughn, American columnist)