035104.08 — Temporary Traffic Signs (TTS)

104.08 Temporary Traffic Signs (Tts)

CATEGORY 100 PRELIMINARY SECTION 104.08 — TEMPORARY TRAFFIC SIGNS (TTS)

104.08.01 Description

Furnish, install, and maintain TTS on or along all transportation facilities.

104.08.02 Materials

Wood Sign Supports 921.05 and 921.06 Square Perforated Tubular Steel Sign Supports As Approved by the Office of Traffic and Safety Reflectorization 950.03 Signs 950.08 Portable Sign Supports, Composite Aluminum Signs, Plastic Signs, and Flexible Roll Up Signs QPL Temporary Traffic Sign Supports shall conform to NCHRP Report 350 and/or MASH 2016 criteria for Test Level 3.

104.08.03 Construction

Place signing in accordance with the MdMUTCD, the Administration’s Standard Highway Sign Book (SHSB), and the Contract Documents. All work area warning signs shall be 48 in. x 48 in. unless otherwise specified. The SHSB may be obtained from the Office of Traffic and Safety, Traffic Engineering Design Division. Designs of signs not included in the SHSB may be prepared by the Contractor in sketch form, to scale, and for approval. Sign designs may be obtained upon a seven-day request to the Office of Traffic and Safety. Make requests in written form directed to the Engineer. Mount signs that will be in place for more than three working days on two 4 in. x 4 in. wood posts or on two 2 in. x 2 in. square perforated tubular steel posts, unless otherwise specified. Mount the sign at a height of at least 7 ft or as specified. Do not place any additional bracing on wood posts unless the sign is behind the protective barrier. The tops of the wood posts shall not protrude more than 3 in. beyond the nearest edge of the sign. Place 4 in. x 4 in. wood posts at least 4 ft into the ground. Place 4 in. x 6 in. wood posts at least 5 ft into the ground. Signs on portable supports shall be mounted so that the bottom of the sign is at least 1 ft above the roadway pavement elevation. Portable sign supports shall be self-erecting, able to withstand a 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS

104.08 Temporary Traffic Signs (Tts)

wind velocity of 70 mph, and able to maintain themselves within 5 degrees rotation around their vertical axis. Use the following minimum thickness for fabricated aluminum signs mounted on wood or steel tubular posts. LONGEST DIMENSION OF SIGN (in.) MINIMUM THICKNESS (in.) ≤ 12 0.040 12+ to 24 0.063 24+ to 36 0.080 36+ to 48 0.10 > 48 0.125 When composite aluminum, plastic, or flexible roll up signs are used on portable supports, the support shall be approved by the Office of Traffic and Safety to hold that sign material. When supported on portable sign supports, composite aluminum signs shall be at least 0.08 in. thick. TTS shall not be installed until inspected and approved. Do not display signs to traffic until directed. Properly maintain the TTS, leave in place while applicable, and remove immediately when no longer required. When operations are performed in phases or stages, only signs that apply to the present conditions shall be displayed to traffic. Properly space the signs along the highway to provide adequate sight distance to work zone signs and existing signs. When a sign is not indicative of actual conditions, such as during periods of temporary shutdown or extended periods of no work being performed (including lunchtimes and overnight periods), either remove the entire work zone setup and remove the sign, turn it away from all traffic (turning parallel to traffic is prohibited), or completely cover it with an approved opaque material. This will not be required for nonwork periods up to one hour. Ensure that signs are not obscured or obstructed, and that they meet all specified sight distance requirements. Use reflectorized TTS for both daytime and nighttime use. Maintain sign faces free of tape, tape residue, or any other foreign matter. Remove all advertisements from signs and supports. Ensure that supplemental signs do not cover any part of the face of the primary sign. Sign Replacement. Maintain signs in a new or like new condition. When directed, replace signs that become faded, illegible, or damaged. Signs that are not new may be used only if the reflective intensity at a divergence angle of 0.2 degrees and incidence angle of minus 4 degrees conforms to at least 70 percent of the values specified in 950.03 over 90 percent of their reflectorized surface. At other times throughout the duration of the Contract, the sign reflectivity intensity shall be at least 60 percent. The acceptability of the signs shall be determined by 1 ft square test plates calibrated in accordance with these requirements. 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS

104.08 Temporary Traffic Signs (Tts)

104.08.04 Measurement and Payment

Temporary Traffic Signs will be measured and paid for at the Contract unit price per square foot for the pertinent Temporary Traffic Sign item. The payment will be full compensation for furnishing the signs and supports, installation, relocation, maintenance, cleaning, replacement due to non-traffic damage and normal wear, removal, and for all material, labor, equipment, tools, and incidentals necessary to complete the work. Where signs have been set and damaged by traffic and the Engineer determines that they are not repairable, replacement will be measured and paid for at the Contract unit price. When no longer needed, temporary traffic signs and all associated materials and incidentals shall be removed from the project site and become the property of the Contractor. 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS

104.09 Temporary Traffic Barrier End Treatments

CATEGORY 100 PRELIMINARY SECTION 104.09 — TEMPORARY TRAFFIC BARRIER END TREATMENTS

104.09.01 Description

Furnish, install, maintain, reset, and remove temporary traffic barrier end treatments in conformance with the manufacturer's recommendations or as directed. Refer to 605.01.01 and

605.01 02.

104.09.02 Materials

Temporary Traffic Barrier End Treatments Refer to the Contract Documents or QPL Temporary Crash Cushion Sand Filled Plastic Barrels (SFPB) 104.10.02 Temporary Traffic barrier End Treatments shall conform to NCHRP Report 350 and/or MASH 2016 criteria for Test Level 3.

104.09.03 Construction

Refer to 605.03.01, 605.03.02, and 605.03.03. Document each step of the installation, and complete and submit the manufacturer installation checklist for the installed product. Temporary End Treatments.