It seems that in wet weather many suffer due to a vehicle going off the
tarmac and making a rutt in the adjacent earth. This then leads to the
tarmac crumbling away into the rutt and so it continues.

In my mind I can envisage a machine that could excavate a narrow trench at
the edge of the tarmac that could be followed up with some steel stakes and
reinforcement and then a readymix lorry.

Has anyone seen any solutions that work that are not as major as curbs?