903.17 Delineation and Object Markers - Revision history

Legged1: /* 903.17.4 Object Markers for Obstructions Adjacent to the Roadway (MUTCD Section 2C.65) */ Clarification per HST email

2024-09-26T20:30:23Z

903.17.4 Object Markers for Obstructions Adjacent to the Roadway (MUTCD Section 2C.65): Clarification per HST email

← Older revision		Revision as of 15:30, 26 September 2024
Line 60:		Line 60:
	'''Support.''' Obstructions not actually within the roadway are sometimes so close to the edge of the road that they need a marker. These include underpass piers, bridge abutments, handrails, ends of traffic barriers, utility poles, and culvert headwalls. In other cases there might not be a physical object involved, but other roadside conditions exist, 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 roadway, and therefore would create a need for a marker.		'''Support.''' Obstructions not actually within the roadway are sometimes so close to the edge of the road that they need a marker. These include underpass piers, bridge abutments, handrails, ends of traffic barriers, utility poles, and culvert headwalls. In other cases there might not be a physical object involved, but other roadside conditions exist, 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 roadway, and therefore would create a need for a marker.

	'''Standard.''' Type 3 object markers shall be used to mark all obstructions within 3 feet of the edge of the travel lane or ~~edge of the~~ edge of the shoulder when shoulders are present (paved or aggregate). Type 3 object markers are not used to mark obstructions located beyond 8 feet of the edge of the travel lane or ~~edge of the~~ edge of the shoulder. See Fig. 903.17.4.1 and Fig. 903.17.4.2 for standard applications of Type 3 object markers.		'''Standard.''' Type 3 object markers shall be used to mark all obstructions within 3 feet of the edge of the travel lane or edge of the shoulder when shoulders are present (paved or aggregate). Type 3 object markers are not used to mark obstructions located beyond 8 feet of the edge of the travel lane or edge of the shoulder. See Fig. 903.17.4.1 and Fig. 903.17.4.2 for standard applications of Type 3 object markers.

	'''Option.''' Type 3 object markers may be used to mark obstructions located within 3 feet to 8 feet of the edge of the travel lane or ~~edge of the~~ edge of the shoulder based on engineering judgment.		'''Option.''' Type 3 object markers may be used to mark obstructions located within 3 feet to 8 feet of the edge of the travel lane or edge of the shoulder based on engineering judgment.

	[[image:903.17.4.1.jpg\|center\|800px]]		[[image:903.17.4.1.jpg\|center\|800px]]

Legged1: /* 903.17.2 Object Marker Design and Placement Height (MUTCD Section 2C.63) */ Clarification per HST email

2024-09-26T20:29:26Z

903.17.2 Object Marker Design and Placement Height (MUTCD Section 2C.63): Clarification per HST email

← Older revision		Revision as of 15:29, 26 September 2024
Line 29:		Line 29:

	'''Guidance.''' When used for marking obstructions within the roadway or obstructions that are 8 ft. or less from the shoulder or curb, the minimum mounting height, measured from the bottom of the object marker to the elevation of the near edge of the traveled way, should be 4 feet.		'''Guidance.''' When used for marking obstructions within the roadway or obstructions that are 8 ft. or less from the shoulder or curb, the minimum mounting height, measured from the bottom of the object marker to the elevation of the near edge of the traveled way, should be 4 feet.

	~~When used to mark obstructions more than 8 ft. from the shoulder or curb, the clearance from the ground to the bottom of the object marker should be at least 4 feet.~~

	Object markers should not present a vertical or horizontal clearance obstacle for pedestrians.		Object markers should not present a vertical or horizontal clearance obstacle for pedestrians.

Smithk at 20:42, 13 November 2020

2020-11-13T20:42:39Z

← Older revision		Revision as of 15:42, 13 November 2020
Line 34:		Line 34:
	Object markers should not present a vertical or horizontal clearance obstacle for pedestrians.		Object markers should not present a vertical or horizontal clearance obstacle for pedestrians.

	'''Option.''' When object markers or markings are applied to an obstruction that by its nature requires a lower or higher mounting, the vertical mounting height may vary according to need. See [[media:903 ~~18 2~~.~~pdf~~\|Fig. 903.18.2]] for an example of lowered mounting height.		'''Option.''' When object markers or markings are applied to an obstruction that by its nature requires a lower or higher mounting, the vertical mounting height may vary according to need. See [[media:903.17.4.1.jpg\|Fig. 903.17.4.1]] for an example of lowered mounting height.

	==903.17.3 Object Markers for Obstructions Within the Roadway ([https://mutcd.fhwa.dot.gov/ MUTCD] Section 2C.64)==		==903.17.3 Object Markers for Obstructions Within the Roadway ([https://mutcd.fhwa.dot.gov/ MUTCD] Section 2C.64)==

Smithk: /* 903.17.4 Object Markers for Obstructions Adjacent to the Roadway (MUTCD Section 2C.65) */

2020-11-13T20:31:18Z