Flail cutting is done along roadsides for safety purposes on defined routes. The roadside is flailed twice a year to reduce the height of the vegetation to ensure sight lines are maintained at intersections and driveways.
Further flailing is done in and around ditches so they can be inspected to reduce blockages. Vegetation growing in the ditch does not necessarily have to be removed, as this is considered in the design and aids in the over all health of the water quality and ecosystem integrity.
Generally the District will do one pass on the roadside, starting in the west working eastward to deal with sightless for safety. When finished the first pass, the tractors will go back and do subsequent passes for ditch maintenance purposes, again starting in the west and working to the east.
The District is not budgeted to mow grass. Once a year roadside cutting and brushing of vegetation is done for safety, not aesthetics.
Brushing along the road right of ways is done for safety purposes. The right of way is brushed reactively to reduce the height of the vegetation, so sightlines are maintained at intersections and driveways. Further brushing is done along sidewalks for the safety of pedestrians.
The District cuts brush or hedges but does not trim them. Hedges and brush need to be maintained about 1m from sidewalks to 3m in height and around 3m from road edge and 5m in height. On corners, hedges and brush should not exceed 1.2m in height or 6m to 25m in each direction for sight lines and at driveways at least 6m on either side and 1.2m in height.