SECTION 703: TRAFFIC MARKERS
703.1 Description
This Work consists of providin g and installing traffic markers and appurtenances in accordance with the MUTCD, current edition and NCHRP Report 350 and/or MASH, as specified in the Contract, or as directed by the Project Manage r.
703.2 Materials
703.2.1 Object Markers, Delineator Posts, Tenth-Mile Delineators
The Contractor shall provide posts of shape, dimensions, and to lerances in accordance with the Contract and the Department's Approved Products List . The Contractor shall punch posts with 3/8 inch diameter holes a nd, unless otherwise specified; ensure a total lengt h of seven (7) ft ± 1/2 inch.
703.2.1 1 Steel Posts
The Contractor shall provide steel posts that: 1. Are rolled from rail or bille t steel in accordance with ASTM A 499; 2. Are galvanized in accordance with ASTM A 123, with the Pivot ed Hammer Test waived, or painted with a black modified polyester paint meetin g the requirements of Federal Standard 595a (Color No. 17038), applied by electro-dep osition to a minimum one (1) mil thickness; 3. Have a smooth, uniform finish free from defects effecting st rength or appearance, whether galvanized or painted; and 4. Have a minimum weight of at least 1.07 lb per foot. The Contractor shall obtain Department approval of alternate pa int colors or application before fabrication.
703.2.1 2 Hardware
The Contractor shall provide hardware that is galvanized or cad mium-plated in accordance with ASTM B 766-86, current version; or mechanically galvanized in accordance with AASHTO M 298, Class 25; or stainless steel. 703.2.2 Reflector Unit For the reflector unit for object markers and Road delineators, the Contractor shall provide a methyl methacrylate (ac rylic) prismatic reflector wit h a rustproof or plastic housing of a minimum 0.02 inch thickness with a center mounting hole. The Contractor shall expand a metal or plastic grommet with a 3 /16 inch inside diameter withi n the reflector-mounting hole. The Contractor shall provide re flector units in accordance with Table 703.2.2:1, “Specific Intensity Values — Round Reflectors,” or Table 703.2.2:2, “Spec ific Intensity Values — Rectangular Reflectors,” as applicable. The Contractor shall provide r ound reflectors with at least a t hree (3) inch diameter and rectangular reflective panels at l east six (6) inches × 12 inch es. Specific Intensity Values — Round Reflectors OA EA Minimum reflective intensity (candlepower per foot-candle) Crystal Amber 0.1 0.0 119.0 71 0.1 20.0 47.0 28 0.33 0.0 26.0 16 0.33 20.0 13.0 8 Table 703.2.2:2 Specific Intensity Values — Rectangular Reflectors OA EA Minimum reflective intensity (candlepower per foot-candle) Crystal Amber Red 0.2 20a 40.0 30.0 10.0 0.2 10a 105.0 75.0 27.0 0.2 0 125.0 90.0 35.0 0.2 5b 125.0 90.0 30.0 0.2 10b 105.0 75.0 30.0 0.2 20b 85.0 60.0 25.0 0.2 30b 30.0 30.0 7.0 0.2 40b 15.0 15.0 4.0 aIndicates off traffic side. bIndicates traffic side.
703.2.3 Flexible Traffic Markers
The Contractor shall provide flexible traffic markers that cons ist of a nonmetallic post with reflective sheeting and a drivabl e or non-drivable anchor syste m, as applicable. The Contractor shall provide posts for flexible traffic markers fabricated from a flexible, nonmetallic Material, resistant to impact, ultraviolet light, o zone, and hydrocarbon damage, and stiffening with age. The Contractor shall provide well-man ufactured posts free from burrs, discoloration, contamination, and other objectionable marks or defects. The Contractor shall use white, yellow, brown, or orange for fl exible traffic markers, as specified in the Contract. The Contractor shall provide flexib le traffic marker posts that are flexible throughout the temperature range of from -38 °F to 150 °F, and provide an installed height of from 18 inches to 48 inches. The Contractor shall use self-rest oring flexible traffic marker s remaining serviceable after being subjected to a series of direct impacts by a standard veh icle. The Contractor shall ensure posts and delineators ar e capable of withstanding five ( 5) impacts at any angle at a speed of 55 mph and ten (10) impacts at any angle at a speed of 35 mph. The Contractor shall provide posts designed for a permanent ins tallation to resist overturning, twisting, and displacement from wind and impact fo rces.
703.2.3 1 Tubular Flexible Traffic Markers
The Contractor shall provide tubular traffic marker posts and b ases of a thermoplastic or pliable elastomer composition m eeting the manufacturer's requir ements, with dimensions in accordance with Table 703.2.3.1:1 , “Dimension Requirements for Tubular Traffic Markers.” The Contractor shall provide t ubular traffic marker bases paint ed black, or the same color as the post. The Contractor shall provide assembly units necessary for the p articular marker in accordance with the manufacturer’s recommendations. Table 703.2.3.1:1 Dimension Requirements for Tubular Traffic Markers Description Dimensions (inch) Outside diameter 2.23–4 Wall thickness, minimum 1/8
703.2.3 2 Flexible Traffic Marker Anchor Systems
The Contractor shall provide pr eformed steel anchors for drivab le reusable anchor systems. If providing tubular anchors, the Contractor shall en sure closed bottoms, to prevent soil entrance during driving. The Contractor shall use non-driv able, pre-drilled systems for direct burial of the post into soil. The Contractor may retain posts with “O” clips (self-loc king) for posts in holes 18 inches deep. The Department may Accept other direct burial methods af ter local demonstration of their stability. The Contractor shall provide surface mounted bases with a heigh t of from 1/2 inch to two
2.inch and an outside diameter of from seven (7) inch to 12 i nch. The Contractor shall provide drive-down bases with the dimensio ns listed on the Department's Approved Products List .
703.2.3 3 Adhesives for Flexible Traffic Markers
The Contractor shall provide epoxy type (permanent installation ) or butyl type (temporary installation) adhesives in accor dance with the manufacturer’s r ecommendations. The Contractor may use other methods, as approved by the Projec t Manager before the Work begins.
703.2.3 4 Flexible Traffic Marker Retroreflective Sheeting
The Contractor shall provide flex ible traffic markers with two (2) three (3) inches high pre- applied retroreflective sheeting bands. The Contractor shall b egin the bands no more than two (2) inches from the top, with no more than six (6) inches b etween them in the front and back, or around the entire circumference. The Contractor shall provide pre-applied retroreflective sheeti ng in accordance with Section 702.2.2, “Barricades and Channelization Devices,” and T able 701.2.4.1.2:1, “Type IV Sheeting – Unmetallized Microprismatic Element,” and Table 701. 2.4.1.2:2, “Type VIII F Sheeting – Fluorescent Micropris matic Lens,” of a color in acco rdance with the Contract. Section 703: Traffic Markers Page 777 703.2.4 Reflective Barrier Delineator The Contractor shall provide a reflective barrier delineator th at consists of an acrylic- plastic shell assembled on a fla t plastic base to form a hermet ically sealed unit. The Contractor shall ensure that the sloped face contains one (1) p rismatic reflective surface to reflect incident light from a single direction. The Contractor shall provide methyl methacrylate acrylic plasti c shells and flat plastic bases in accordance with Federal Specification LP-390C, Type I, Class 3.
703.2.4 1 Reflective Barrier Delineator Adhesive
The Contractor shall provide adhesive capable of fixing delinea tors for the duration of their intended use. The Contractor shall use primer, as specif ied by the manufacturer, to prepare the pre-cleaned barrier surface.
703.2.4 2 Reflective Barrier Delineator Configuration
The Contractor shall provide the reflective barrier delineator in accordance with the Contract and Table 703.2.4.2:1, “Requirements for Reflective Ba rrier Delineator Configuration.” Table 703.2.4.2:1 Requirements for Reflective Barrier Delineator Configuration Description Requirement Slope of reflecting face (degrees) 0–11 Area of reflecting face, minimum (square inches) 6 1/2 The Contractor shall ensure that the outer shell surface is smo oth except for identification markings. The Contractor shall provide a nontransparent (white or light gray) base of the marker with an attached 0.12 inch thick pad of pressure sensiti ve adhesive and a minimum overall height of 2.46 inches including the adhesive pad.
703.2.4 3 Reflective Barrier Delineator Optical Requirements
When the reflective barrier delineator is mounted with its base flat against a vertical surface with the leading edge of the delineator perpendicular t o the horizontal plane, the Contractor shall ensure the Specific Intensity in accordance wi th Table 703.2.4.3:1, “Specific Intensity Values Reflective Barrier Delineator.” The Contracto r shall ensure the Specific Intensity for yellow delineators of at least 60% of the value f or crystal reflecting surface. Table 703.2.4.3:1 Specific Intensity Values Reflective Barrier Delineator Minimum reflective intensity (candlepower per foot-candle) OA EA Crystal 0.1 0 55.0
703.2.5 Sign Post Reflector Panel
The Contractor shall provide si gn post reflector panel(s) of s hape, dimension, color and tolerances specified in the Contract. Panels shall also be in conformance with the MUTCD (current edition). Section 703: Traffic Markers Page 778 Sign post reflector panels shall be constructed of a UV-stabil ized high-impact thermoplastic alloy. All retroreflective sheeting shall conform to Section 701.2.4. 1, “Retroreflective Sheeting” and shall be factory-applied by the manufacturer.
703.3 Construction Requirements
The Contractor shall set posts plumb and to the depth specified in the Contract. Posts may be driven. The Project Manager will direct placement of po sts set in rock. The Contractor shall provide object markers and Road delineato rs in accordance with the MUTCD, current edition. The Contractor shall label object mark ers as A3, OM-1, OM-2H, or OM-3. If removal of an installation (temporary or permanent) is neces sary and the metal, concrete, or asphalt surface is damaged, the Contractor shall r epair and otherwise restore the damaged surface to its original condition, at no additional cos t to the Department. The Contractor shall replace defecti ve posts, bases, assembly units , adhesives, or reflective sheeting that interfere with the intended use of the traffic ma rkers, at no additional cost to the Department.
703.3.1 Surface-Mounted Flexible Traffic Marker Installations
The Contractor shall thoroughly clean metal, concrete, or aspha lt surfaces before mounting flexible traffic markers. The Contractor shall sandbl ast or wire-brush metal and concrete surfaces. The Contractor shall clean asphalt surfaces in accordance with the adhesive manufacturer’s recommendations. The Contractor shall remove loose sand, dust, and other Deleterious Material from cleaned mounting surfaces. The Contractor shall apply adhesive and install surface mounted flexible traffic markers in accordance with the manufacturer’s recommendations.
703.3.2 Reflective Barrier Delineators Installation
The Contractor shall install reflective barrier delineators in accordance with the manufacturer’s recommendations, us ing a pressure-sensitive syst em on a clean, dry, vertical surface at intervals and the distance above the road surface, a s specified in the Contract, or as directed by the Project Manager.
703.3.3 Sign Post Reflector Panel Installation
Sign post reflector panels shall be bolted to the post with an ti-theft hardware in accordance with the manufacturer’s recommendations and as appro ved by the Project Manager.
703.4 METHOD OF MEASUREMENT—Reserved
703.5 Basis of Payment
Pay Item Pay Unit Object Marker Type_____ Each Road Delineator Type_____ Each Flexible Traffic Marker Each Section 703: Traffic Markers Page 779 Tubular Flexible Traffic Marker Each Reflective Barrier Delineator Each 1/10-Mile Delineator Each Sign Post Reflector Panel Each
703.5.1 Work Included in Payment
The following Work and items will be considered as included in the payment for the main items and will not be measured or paid for separately: 1. Adhesive; 2. Anchors; 3. Retroreflective sheeting; 4. Reflector units; 5. Hardware; and 6. Excavation, backfill, and com paction for marker installation s. Section 704: Pavement Markings Page 780
Source: New Mexico Standard Specifications for Highway and Bridge Construction, 2019 Edition. Pages 0–0 of 974.