Posted: 15/11/2016 at 10:45
Thanks for the suggestions.
The road committee have considered posts, but some of the large trucks are so large that if/when they hit a post, they will only knock it to the side, dislodge a large section of soil (or lever up the concrete road) and not even know they have hit anything.
We have considered large stones (expensive) and currently have a lot of large logs that dissuade cars from cutting the corner, but again, when a truck hits the logs, the driver does not even know.
The turning circle is large enough for most trucks, but very big ones do give it a try. And then then cut the internal corners because the roundabout is not a constant diameter. If the hard internal edges are enlarged, then that will only encourage large trucks to turn even tighter and they will still run over the verge.
Hence, i would like to inexpensively, reinforce the verge so that if/when a truck does run over it, the ground is more solid grass rather than incredibly squidgey grass.