have sufficient number of 3/8 inch diameter holes on 1 inch centers to facilitate attachment of the flexible post.
Design a delineator post for a permanent installation to resist overturning, twisting and displacement from wind and impact forces.
Design flexible delineators that do not bend, warp or distort and remain straight, when stored or installed at temperatures up to + 120°F. Design all components of the flexible delineator, post and reflective sheeting to remain stable and remain fully functional within a temperature range of - 20°F t o + 120°F.
Design flexible delineators that meet the impact and wind resistance of the current evaluation criteria of the AASHTO Product Evaluation & Audit Solutions .
Provide flexible delineator pos t that are permanently identified, on the rear side, with the manufacturer’s name and the month and year of fabrication in order to provide a tracking method for ongoing outdoor evaluation, and specification quality control. The letters shall be at least 1/4 inch in height and permanently affixed to the rear of the marker.
Furnish a Type 2 and Type 3 material certification in accordance with Article 106- 3 for all flexible delineators before use.
All materials are subject to the approval of the Engineer. TRAFFIC CONTROL -1 WORK ZONE SIGNS
Use Grade B fluorescent orange retroreflective sheeting on rigid work zone sign substrates. All sheeting shall conform to Article 1092 -2. Cover the entire sign face of the sign substrate with Department approved sheeting as found on the NCDOT APL . No bubbles or wrinkles will be permitted in the material. Products manufactured prior to December 31, 2019 shall meet NCHRP 350 or MASH crash requirements for Category II work zone devices.
Use approved composite or aluminum substrate for sign backing. For aluminum substrate sign thickness, refer to Table 901- 2. Use w ork zones igns (stationary) and sign supports as found on the NCDOT APL.
Use approved composite or roll -up signs for barricade mounted sign substrates. No other type of sign substrate is allowed on barricades . Approved composite barricade mounted warning signs (black on orange) shall be Grade B retroreflective sheeting that meets the requirements of Article 1092 -2.
NCDOT APL. Work Zones Signs (Portable) Use approved composite or roll -up sign substrates on portable sign stands. No other type of sign substrate is allowed on portable sign stands. Use w ork zone signs ( portable) and sign supports as found on the NCDOT .
Use Grade B fluorescent orange retroreflective sheeting that meets the requirements of Article 1092 -2.
Use Grade B fluorescent orange retroreflective sheeting for roll -up signs that me et the requirements of Article 1092 -2. Use roll up signs that have a minimum 3/16 inch x 1 1/4 inches horizontal rib and 3/8 inch x 1 1/4 inches vertical rib .
Furnish a Type 3 material certification in accordance with Article 106 -3 for all new reflective sheeting used on work zone signs meeting the retroreflective requirements of Article 1092 -2. Furnish a Type 7 material certification for all used signs meeting the minimum retroreflective requirements of Article 1092 -2.
All materials are subject to the approval of the Engineer.
Refer to Subarticle 1092 -2(B) for warranty requirements of rigid sign retroreflective sheeting. Roll-up fluorescent orange retroreflective signs will maintain 80% of its retro reflectivity as described in Article 1092 -2 for years 1 and 2 and 50% for year 3. Rigid and rollup fluorescent orange signs shall maintain a fluorescence luminance factor of 13% for 3 years and conform to Article 1092- 2. Rigid and roll up fluorescent orange signs shall maintain a total luminance factor of 25 for 3 years and conform to Article 1092 -2. -2 WORK ZONE SIGNS SUPPORTS
Products manufactured prior to December 31, 2019 shall meet NCHRP 350 or MASH crash requirements for Category II work zone devices .
Provide work zone sign supports for work zone signs (stationary) that are sturdy, durable and crashworthy. Use w ork zone signs (stati onary) and sign supports as found on the NCDOT APL . Use 3 lb U-channel steel posts, 4 inches x 4 inches wood posts or perforated square steel tubing posts for all work zone signs. Dual mount signs with surface areas greater than 10 sf on either 3 lb U-channel steel posts, 4 inches x 4 inches wood posts or perforated square steel tubing posts having the equivalent or greater strength of 3 lb U-Channel Steel posts. Perforated square steel tubing breakaway posts certified by the manufacturer for single mounting purposes may be used for the single mounting of stationary work zone signs for signs greater than 10 sf.
3 lb. steel U -channel posts shall comply with Subarticle 1094 -1(B) and may be galvanized steel or painted green by the post manufacturer.
Use work zone signs and portable work zone sign stands that are sturdy, durable and crashworthy. Use w ork zone signs (portable) and sign supports as found on the NCDOT APL .
Provide portable work zone signs and stands that are listed on the NCDOT Approved Product List. Furnish a Type 3 material certification in accordance with Article 106 -3 for all new work zone sign (stationary) posts and a Type 7 material certification for all used work zone sign (stationary) posts before use. Furnish a Type 3 material certification in accordance with Article 106 -3 for all new portable work zone sign stand assemblies and a Type 7 material certification for all used portable work zone sign stand assemblies before us e.
All materials are subject to the approval of the Engineer. -3 BARRICADES
Construct barricades out of perforated square steel tubing, angle iron or other Department approved materials . Use barricade rails constructed of approved composite, hollow/corrugated extruded rigid polyolefin, HDPE or other Department approved material that have a smooth face and alternating orange and white retroreflective stripes that slope at an angle of 45°. Use b arricades as found on the NCDOT APL . Products manufactured prior to December 31, 2019 shall meet NCHRP 350 or MASH crash requirements for Category II work zone devices .
Support barricade rails in a manner that shall be visible to the motorist and provide a stable support not easily blown over by wind or traffic.
Use Grade B retroreflective sheeting that meets Article 1092 -2. Flame treat rails before applying the sheeting if required by the sign sheeting manufacturer. Apply the reflective sheeting with a pr essure sensitive adhesive to both sides of the rails. Use the same color sheeting on each rail of any individual barricade.
Furnish a Type 3 material certification in accordance with Article 106 -3 for all new barricades and a Type 7 material certification for all used barricades before use.
All materials are subject to the approval of the Engineer. -4 SEQUENTIAL FLASHING WARNING LIGHTS
Provides equential flashing warning lights that meet all of the requirements for Type A warning lights in accordance with the MUTCD.
Each light unit shall be capable of operating fully and continuously for a minimum of 200 hours when equipped with a standard batt ery set.
Each light in the sequence shall be yellow and flashed at a rate of not less than 55 times per minute and not more than 75 times per minute. The flash rate and flash duration shall be consistent throughout the sequence.
The lights shall be weather independent and visual obstructions shall not interfere with the operation of the lights .
Furnish a Type 3 material certification in accordance with article 106 -3 for all new Sequential Flashing Warning Lights and a Type 7 material certification for all used Sequential Flashing Warning Lights .
Use sequential flashing warning lights listed on the NCDOT APL. -5 CHANNELIZING DEVICES
Provide drums composed of a body, alternating orange and white 4- band pattern of Type III- High Intensity or higher prismatic retroreflective sheeting and ballasts .
Provide a drum made of orange, impact resistant, ultraviolet plastic material capable of maintaining its integrity upon impact throughout a temperature range of - 20°F to 125°F. When struck, the drum shall not permanently distort to a degree that would prevent reuse, nor roll excessively after impact. Design the drum to prevent water from accumulating and freezing in the top or bottom. Provide a drum that is cylindrical in shape with the following dimensions; a minimum height of 36 inches , a minimum top outer diameter of 18 inches , a bottom outer diameter of 21 inches to 24 inches , and a minimum weight of 7 lbs . The top outer diameter shall not exceed the bottom outside diameter. Provide closed tops on drums to prevent accumulation of debris.
Provide at least four retroreflective bands with two orange and two white alternating horizontal circumferential bands. The top band shall always be orange. Use a 6 inch to 8 inch wide band Type III –High Intensity or higher prismatic retroref lective sheeting meeting the requirements of Article 1092 -2 for each band. Do not exceed 2 inches for any non -retro reflective spaces between orange and white stripes. Do not splice the retroreflective sheeting to create the 6 inch band. Apply the ret roreflective sheeting directly to the drum surface. Do not apply the retroreflective sheeting over a pre-existing layer of retroreflective sheeting. Do not place bands over any protruding corrugations areas. No damage to the retro reflective sheeting sho uld result from stacking and unstacking the drums, or vehicle impact.
Ballast drums using the sandbag ballast method, the tire sidewall ballast method or the preformed weighted base ballast method. When properly ballasted, the drums shall be wind resistant to the extent of withstanding wind created by traffic under normal roadway conditions, including high speed truck traffic in close proximity to the drums. Do not place ballast on top of the drum.
Supply a sandbag with 50 l b. of sand with each drum. Place the sandbag inside the body on top of the detachable base. Upon impact the main body of the drum shall deform and become detached from the base, allowing vehicles to easily pass over the remaining base.
Design the base of the drums to accommodate no more than two tire sidewalls that when combined will have a weight of at least 30 lb and no more than 50 lb. Use the manufacturer’s required tire sidewall ballast. Upon impact the main body of the drum shall deform and become detached from the tire sidewalls, allowing vehicles to easily pass over the tire sidewall ballasts.
Supply a preformed base specifically designed for the model drum. The weight of each d rum’s preformed base will be self -certified by the manufacturers. Each drum with preformed bases shall be approved by the Work Zone Traffic Control Unit. Upon impact, the main body of the drum shall deform and become detached from the base allowing vehicles to easily pass over the remaining base.
Furnish a Type 3 material certification in accordance with Article 106 -3 for all new drums and a Type 7 material certification for all used drums before use.
All materials are subject to the approval of the Engineer.
Provide skinny drums composed of a body, alternating orange and white stripes of Type III- High Intensity or higher prismatic retro reflective sheeting and ballasts
Provide a skinny drum made of orange, impact resistant, ultraviolet plastic material capable of maintaining its integrity upon impact throughout a temperature range of - 20°F to 125°F. When struck, the skinny drum shall not permanently distort to a degree that would prevent reuse , nor roll excessively after impact. Design the skinny drum to prevent water from accumulating and freezing in the top or bottom. Provide a skinny drum that is cylindrical in shape with the following dimensions; a minimum height of 42 inches , a minimum to p outer diameter of 4 inches and a bottom outer diameter of 7.5 inches . The top outer diameter shall not exceed the bottom outside diameter. Provide closed tops on drums to prevent accumulation of debris.
Provide at least four retroreflective bands with two orange and two white alternating horizontal circumferential bands for each skinny drum. The top band shall always be
orange. Use a 6 inch to 8 inch wide band Type III –High Intensity or higher prismatic retroreflective sheeting that meets Article 1092 -2 for each band. Do not exceed 2 inches for any non -retro reflective spaces between orange and white stripes. Do not splice the retroreflective sheetin g to create the 6 inch band. Apply the retroreflective sheeting directly to the skinny drum surface. Do not apply the retroreflective sheeting over a pre-existing layer of retroreflective sheeting. Do not place bands over any protruding corrugation areas. No damage to the reflective sheeting should result from stacking and unstacking the skinny drums, or vehicle impact.
Ballast skinny drums using a preformed base specifically designed for the model skinny drum. Each base shall be at least 15 lb and circular or polygonal with equal sides. When properly ballasted, the skinny drums shall be wind resistant to the extent of withstanding wind created by traffic under normal roadway conditions , including high speed truck traffic in close proximity to the skinny drums. Do not place ballast on top of the drum. Upon impact, the main body of the drum shall deform and become detached from the base allowing vehicles to easily pass over the remaining base.
Furnish a Type 3 material certification in accordance with Article 106 -3 for all new skinny drums and a Type 7 material certification for all used skinny drums before use.
All materials are subject to the approval of the Engineer.
Use cones made of ultraviolet stabilized plastic impact resistant material meeting MUTCD and this article. Orange will be the predominant color on cones. Use cones conical in shape with a minimum height of 28 inches or 36 inches. The 28 inch cones shall have a minimum base dimension of 13.75 inches, and the 36 inch cones shall have a minimum base dimension of 14.5 inches as shown in the Roadway Standard Drawings . The 28 inch and 36 inch cones (excluding ballast) shall have a minimum weight of 7 lbs. and 10 lbs. respectively. When in an upright position, have the cones display the same dimensions regardless of their orientation to oncoming traffic.
Provide wind resistant cones that do not blow over under normal roadway conditions, including high speed truck traffic in close proximity to the cones when properly ballasted. Provide cones that do not permanently distort to a degree that would prevent reuse when struck. Achieve ballasting of the cones by using any of the following methods:
dropped over the cones and onto the base to provide increased stability.
Where retroreflective cones are required, provide a cone with flexible, prismatic cone sheeting having impact resistance and attached with precoated pressure sensitive adhesive. The retroreflective sheeting shall meet or exceed the retroreflectivity
requirements of Grade B sheeting in Article 1092- 2. Use two retroreflective bands, the top one is 6 inches wide and the bottom one is 4 inches wide; see Roadway Standard Drawings .
Furnish a Type 3 material certification in accordance with Article 106 -3 for all new cones with or without retroreflective sheeting and a Type 7 material certification for all used cones with or without retroreflective sheeting before use.
All materials are subject to the approval of the E ngineer. -6 FLASHING ARROW BOARDS
Provide a trailer mounted arrow board that meets or exceeds the physical and operational requirements of the MUTCD and found on the NCDOT APL . Products must be current with the applicable AASHTO Product Evaluation & Audit Solutions workplan to remain on the NCDOT APL. The following specifications supplement those basic requirements. Provide a totally mobile complete unit capable of being located as traffic co nditions demand. The display housing shall meet the minimum size requirements of a Type C panel with a 15 or 25 lamp configuration. The display housing shall have a hand -crank mechanism to allow raising and lowering the display with a locking device to ensure the display housing will remain secured in either position The display housing will have a minimum height of 7 f eet from the bottom of the sign to the ground when raised in the upright position. The display housing assembly shall be of weather resistant construction. The lamps shall be controlled to provide the following modes as a minimum: Flashing Right or Left Arrow, Flashing Double Arrow and Caution Mode ( four outermost corner lamps).
Provide a unit that is solar powered and supplemented with a battery backup system that includes a 110/120 VAC powered on -board charging system. The unit shall also be capable of being powered by standard 110/120 VAC power source. The batteries, when fully charged, shall be capable of powering the display for 20 continuous days with no solar power. Store the battery bank and charging system in a lockable, weather and vandal resistant box.
Provide automatic brightness/dimming of the display and a manual override dimming switch. The contr oller shall provide a battery -charge status indicator. Mobile radio or any other radio transmissions shall not affect the controller. Store the controller in a lockable, weather and vandal resistant box.
Finish all exterior metal surfaces with Fede ral orange enamel per AMS -STD -595, color chip ID# 13538 or 12473 respectively. The trailer shall be able to support a 100 mph wind load with the display fully extended. The trailer shall be equipped with leveling jacks capable of stabilizing the unit in a horizontal position when located on slopes 6:1 or flatter. The trailer shall be properly equipped in compliance with North Carolina Law governing motor vehicles. Provide a minimum 4 inch wide strip of fluorescent orange retroreflective sheeting to the frame of the trailer. Apply the sheeting to all sides of the trailer. The retroreflective sheeting shall be Grade C that conforms to Article 1092- 2. Drums may be supplemented around the unit in place of the sheeting.
Provide a sign unit that all components are rated to operate at temperatures ranging from - 30°F to 165°F. The sign manufacturer shall notify the Work Zone Traffic Control Unit whenever modifications are made to a prequalified sign on the NCDOT APL . The Work Zone Traffic Control Unit will review changes and per its discretion either make no change to the sign’s status or remove it from the list until the sign can be reevaluated.
Furnish a Type 3 material certification in accordance with Article 106 -3 for all new flashing arrow boards , a Type 7 material certification for all used flashing arrow boards , and wind load certifications required in Subarticle 1089- 6(D) for all new and used flashing arrow boards before use.
The sign shall be on the NCDOT APL before use on construction projects in North Carolina. A sign may be removed from the NCDOT APL due to unsatisfactory field performance and shall not return to the list until the manufacturer identifies the reason for the failure and the problem has been corrected to the satisfaction of the Department. The sign manufacturer shall notify the Department whenever modifications are made to their sign that was prequalified on the NCDOT APL . The Department will review changes and per its discretion, either mak e no change to the sign’s status on the NCDOT APL or remove the sign from the list until the sign can be reevaluated. -7 PORTABLE CHANGEABLE MESSAGE SIGNS
Provide trailer or truck mounted portable changeable message signs that meet MUTCD and found on the NCDOT APL . Products must be current with the applicable AASHTO Product Evaluation & Audit Solutions workplan to remain on the NCDOT APL. A trailer mounted portable changeable mess age sign shall be a totally mobile complete sign unit capable of being located as traffic conditions demand.
Provide sign capable of sequentially displaying at least 2 phases of 3 lines of a programmable message with at least 8 characters per line and a character height of at least 18 inches .
The display characters will be composed of LED elements. The display panel may be of the following types - Full Matrix, Continuous Line Matrix, and Character Matrix. Messages are to be automatically centered and proportionally spaced on each line of a Full Matrix and Continuous Line Matrix displays. Character Matrix displays shall display odd number character messages one character left of the centerline. The display characters shall be protected with a p olycarbonate lens that shall not decrease the daytime visibility of the sign. The display panel shall have an electro -hydraulic system to allow raising and lowering the display with 360° rotation capability. The distance from the bottom of the sign to the ground shall be at least 7 feet. A locking device(s) shall be provided to ensure the display will remain secure in the raised, lowered and rotated positions. The sign shall have the capability to be raised and rotated to its operating position by one person. A manual backup mechanism for the raising and lowering the display panel shall be provided in the event the electro- hydraulic system fails. The display panel assembly shall be of weather resistant construction
The unit shall be Solar powered and supplemented with a battery backup system which includes a 110/120 VAC powered on -board charging system. The batteries, when fully charged, shall be capable of powering the display for 20 continuous days with no solar power. The unit shall be ca pable of being powered by standard 110/120 VAC power source. Store the battery bank and charging system in a lockable, weather and vandal resistant box.
The controller shall be capable of being equipped with the necessary hardware and software to allow wireless communication with other portable changeable message signs or other components of an intelligent transportation system. The controller shall also provide at a minimum; a keyboard, a display for message review and editing, a light source f or nighttime operations, an event time clock and all other required controls for the operation of the display. Program each controller with password protection that will deter unauthorized programming of the controller. Change the controller password fr om the factory default and periodically change the controller password to deter unauthorized programming of the controller . The password system is recommended to include at l east two levels of security such that operators at one level may only change message sequences displayed using preprogrammed sequences and operators at a higher level may create and store m essages or message sequences. The controller shall include the following capabilities; manually dimming the display, storing at least 99 user generated messages, adjusting the flash rate of display and display phasing and monitoring battery- charge status. Mobile radio or any other radio transmissions shall not affect the controller. The controller shall be stored in a locked, weather and v andal resistant box when not in use and after changes to the messages are made.
The controller shall be pre -programmed with messages shown below and stored in memory: MAX SAFE SPEED 25 MPH MAX SAFE SPEED 30 MPH STOP AHEAD YIELD AHEAD MAX SAFE SPEED 35 MPH MAX SAFE SPEED 40 MPH MAX SAFE SPEED 45 MPH MAX SAFE SPEED 50 MPH ONE LANE BRIDGE SURVEY CREW MAX SAFE SPEED 55 MPH DETOUR AHEAD CAUTION DETOUR AHEAD LANE CLOSED AHEAD RIGHT LANE CLOSED LEFT LANE CLOSED CENTER LANE CLOSED SINGLE LANE AHEAD MERGE LEFT MERGE RIGHT KEEP LEFT KEEP RIGHT PASS LEFT PASS RIGHT USE LEFT LANE USE RIGHT LANE MERGE AHEAD ROAD MACHINES AHEAD ROAD WORK AHEAD FLAGGER AHEAD BUMP DIP STOP AHEAD YIELD AHEAD BE PREPARED TO STOP SIGNAL AHEAD SIGNAL NOT WORKING DO NOT PASS ONE LANE BRIDGE SURVEY CREW SHOULDER WORK SOFT SHOULDER PAVEMENT ENDS LANE ENDS ROAD CLOSED 1/4 MILE ROAD CLOSED 1/2 MILE ALL TRAFFIC EXIT LEFT ALL TRAFFIC EXIT RIGHT ROAD NARROWS ROAD CLOSED AHEAD RAMP CLOSED REDUCE SPEED ROAD PAVING AHEAD ALL TRAFFIC MUST STOP SLOW MOVING TRAFFIC NIGHT WORK AHEAD CAUTION FLAGGER AHEAD RUNAWAY TRUCK RAMP MEDIAN WORK AHEAD LEFT LANE NARROWS RIGHT LANE NARROWS TEST PATTERN AA TEST PATTERN BB
Finish all exterior metal surfaces with Federal orange enamel per AMS -STD -595; color chip ID# 13538 or 12473 respectively except for the sign face assembly that shall be flat black. Provide a minimum 4 inches wide strip of fluorescent orange retroreflective sheeting to the frame of the trailer. Apply the sheeting to all sides of the trailer. The retroreflective sheeting shall be Grade C that conforms to Article 1092 -2. Drums may be supplemented around the unit in place of the sheeting. The trailer shall be able to support a 100 mph wind load with the display fully extended. The trailer shall be equipped with leveling jacks capable of stabilizing the unit in a horizontal position when located on slopes 6:1 or flatter. The trailer shall be properly equipped in compliance with North Carolina Law governing motor vehicles.
Provide a sign unit that all components are rated to operate at temperatures ranging from - 30°F to 165°F.
Furnish a Type 3 material certification in accordance with Article 106 -3 for all new changeable message signs, a Type 7 material certification for all used changeable message signs and wind load certifications required in Subarticle 1089 -7(E) for all new and used changeable message signs before use.
The sign shall be listed on the NCDOT APL before use on construction projects in North Carolina. A sign may be removed from the NCDOT APL due to unsatisfactory fiel d performance and shall not return to the list until the manufacturer identifies the reason for the failure and the problem has been corrected to the satisfaction of the NCDOT. The sign manufacturer shall notify NCDOT whenever modifications are made to the ir sign that was prequalified on the NCDOT APL . The Department will review changes and per its discretion will either make no change to the sign’s status on the NCDOT APL or remove the sign from the list until the sign can be reevaluated. -8 TEMPORARY CRASH CUSHIONS
Provide temporary crash cushions that meet Test Level II for work zones that have a posted speed limit of 45 mph or less. Provide temporary crash cushions that meet Test Level III devices for work zones that have a posted speed limit of 50 mph or greater. Use t emporary crash cushions as found on the NCDOT APL. Products manufactured prior to December 31, 2018 shall meet NCHRP 350 or MASH crash requirements for Category III work zo ne devices. Provide redirective temporary crash cushions or non -directive temporary crash cushions that capture errant vehicles without complete penetration through the device. The temporary crash cushion shall contain the debris resulting from impact within the structure of the temporary crash cushion. Include in the temporary crash cushion package any required rear transition panels to connect the back of the temporary crash cushion to rigid or flexible barrier systems . Include any required portable bas e, as recommended by the manufacturer of the temporary crash cushion, to connect the bottom of the temporary crash cushion to a paved surface. Temporary crash cushion shall not be placed on an unpaved surface.
Provide a yellow nose wrap that visually matches the color chip that corresponds to the AMS -STD -595 for Yellow (Color No. 13538) for all temporary crash cushions. The retro reflective end treatment shall meet the requirement for retro reflectivity in Article 38 1088 -1 and Roadway Standard Drawings .
Furnish a Type 3 material certification in accordance with Article 106 -3 for all new temporary crash cushions and a Type 7 material certification for all used temporary crash cushions before use .
Use temporary crash cushions listed on the NCDOT APL .
-9 ATTENUATORS
Provide truck mounted attenuators that meet Test Level II for work zones that have a posted speed limit of 45 mp h or less. Provide truck mounted attenuators that meet Test Level III for work zones that have a posted speed limit of 50 mph or greater. Use a ttenuators as found on the NCDOT APL. Products manufactured prior to December 31, 2018 shall meet NCHRP 350 or MASH crash requirements for Category III work zone devices. Use trucks with gross vehicle tare weight as described in the NCHRP 350 crash test for the impact attenuator provided. Provide truck in accordance with the manufacturer’s specifications. Ballasting methods are not permitted. Use the attenuator in accordance with the manufacturer’s specifications. Provide truck mounted attenuators with standard trailer lighting systems, including brake lights, tail lights and turn signals.
The retro reflective end treatment shall meet Article 1088 -1 and Roadway Standard Drawings .
Furnish a Type 3 material certification in accordance with Article 106 -3 for all new truck mounted attenuators and a Type 7 material certification for all used truck mounted attenuators before use.
Use truck mounted attenuators listed on the NCDOT APL . -10 FLAGGER
Use retro reflective sheeting with a smooth, sealed outer surface that will display the same color both day and night. Cover the entire sign face with Grade B retro reflective sheeting. R etror eflective sheeting shall meet Article 1092 -2. The distance from the bottom of the sign to the ground shall be at least 6 feet.
Furnish a Type 3 material certification in accordance with Article 106-3 for all new reflective sheeting used on flagger paddles and a Type 7 material certification for all used sheeting before use.
All materials are subject to the approval of the Engineer.
Use highly- visibility safety apparel that meets the Performance Class 2 or higher requirements of the ANSI/ISEA 107- 2010 or the equivalent revision. For nighttime flagging operations, Performance Class 3 safety apparel is required.