Scenario: a crew has to plow several roundabouts and a curvy road, and edge ends keep coming back damaged. Direct answer: tight radii put the edge end and the truck’s swept path close to curbs and islands, so plan the pass, slow down and check the edge ends after the shift. The list is practical advice from a maintenance view, not a design standard.
Before the shift
Tight radii punish a plow that is not square, so the check happens before the route rather than during it.
- [ ] Review the route: roundabout islands, splitter islands, drainage covers, raised markers.
- [ ] Check that the plow is set square and the shoes are even.
- [ ] Check edge ends for chips from last time.
- [ ] Mark known hazards on the route sheet.
On the approach
The approach sets the geometry that the curve will punish.
- [ ] Slow down earlier than on straight sections.
- [ ] Set the plow angle to push snow to the outside of the curve where there is storage room.
- [ ] Keep the plow edge clear of the curb face; leave a narrow margin and finish it on a later pass if needed.
In the curve
Inside the curve the plow is angled against a changing path, and the ends carry the load.
- [ ] Keep a steady speed and avoid sudden angle changes.
- [ ] Watch the inside of the turn, where the plow end can swing toward the island.
- [ ] Lift the plow slightly where the surface rises or a cover is known.
After the shift
The check after the shift is what turns a strike into a record.
- [ ] Inspect both edge ends and the shoes.
- [ ] Check bolts at the ends.
- [ ] Log any strike with location and cause.
Why ends suffer
On a curve the plow is angled against a changing path. The ends are the part that moves furthest toward a curb or an island, and any catch there loads the end bolts more than the middle. This is reasoning, not measurement.
Longer-term options
The permanent fixes are road-owner decisions, so they take a season to land.
- Ask the road owner about island markings and reflective posts.
- Consider a shorter plow or a flexible edge end on routes full of roundabouts, and trial it first.
- Rotate edges if the design allows, as covered in our reversible-edge article.
Running a short drill
Before the season, take a truck and a supervisor to the trickiest roundabout and walk the swept path with cones. Show new drivers where the plow end goes and where it must not. Ten minutes in daylight with no snow is far cheaper than a damaged plow or a crushed island marker in the dark, and the drill gives you photographs for your briefing.
Boundary: general operating advice, not a design or safety standard. Follow your agency’s procedures and manufacturer guidance.
Further reading on this site.
Apron Clearing: Equipment and Edge Selection for Tight, Congested Areas ↗Blade Profile and Moldboard Geometry: Curved, Flat and Sectional Edges Explained ↗Carbide snow plow blades ↗Raised Pavement Markers vs Plow Edges: A County Planning Scenario ↗Plowing Concrete vs Asphalt: Why Edge Life Differs and How to Plan for It ↗
