About Object Markers
The purpose of object markers is to mark obstructions located within or adjacent to the roadway including underpass piers, bridge abutments, handrails, ends of traffic barriers, utility poles, and culvert headwalls. Other roadside conditions, such as narrow shoulders, drop-offs, gores, small islands, and abrupt changes in the roadway alignment, that might make it undesirable for a road user to leave the roadways, also create a need for a marker. Refer to the MUTCD for more information.
- Above Grade Clearance for Object Markers: 4 feet from the ground to the bottom of the object marker.
- Type 1 Object Markers: Used to mark obstructions within the roadway.
- Type 2 Object Markers: Used to mark obstructions adjacent to the roadway.
- Type 3 Object Markers: Used to mark obstructions adjacent to or within the roadway.
- Type 4 Object Markers: Used to warn and alert road users of the end of a roadway.
