The gullies at the edge of the road incorporate a trap to
collect leaves, paper, stones, etc. which could clog the drainage
system, causing flooding. The gully traps have to be emptied to
ensure the continued efficient functioning of the gully. They are
normally emptied once a year but in some locations (e.g. roads
without kerbs) they are emptied twice a year.
For further information please contact Highways Service -
telephone: 0300 123 7036.