Specificaitons_Attenuators_combined_Final_10.10.25.pdf
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- Attached to
- 40100 - Attenuators -UPDATED
- Solicitation number
- Event 40100-13731
- Issued by
- Knox County, Tennessee
About this file
This document is a solicitation for Truck and Trailer Mounted Attenuators for the Tennessee Department of Transportation. The solicitation covers multiple line items for different Truck Mounted Attenuator (TMA) specifications, including Mid Axle Design, Rear Axle Design, Fold in Bed Storage and Transport, and Tailgate Mounting System. The procurement is being awarded by grouped line items, with a maximum of two awarded vendors. Each specification requires a TMA that is designed for quick attachment to support vehicles, capable of being towed by vehicles with gross vehicle weights between 13,500 and 25,000 GVW, and must meet MASH-2016 Test Level 3 requirements. The TMAs must include specific components such as energy-absorbing modules, lighting assemblies, and mounting systems, with detailed specifications for dimensions, weight, and performance.
The solicitation includes a catalog parts discount provision, with additional funding allocated for replacement and optional parts. The estimated spend for replacement parts is $100,000, and for optional parts is also $100,000. Delivery locations are specified in four Tennessee cities: Knoxville, Chattanooga, Nashville, and Jackson. Acceptable brands/models include Scorpion II Attenuator by Traffix Devices, SMT by Valtir, and SS180M by Valtir, with the option to provide an equal alternative. The document emphasizes that all components must meet federal motor vehicle safety standards and be appropriate for their intended purpose, with specific requirements for lighting, visibility, and impact resistance.
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Truck and Trailer Mounted Attenuator Specifications (revised 10.10.2025)
PLEASE NOTE THIS SOLICITATION IS BEING AWARDED BY GROUPED LINE ITEMS. IN ORDER TO BE CONSIDERED FOR AWARD OF A GROUP, ALL LINES OF THAT GROUP MUST BE BID ON. THE MAXIMUM
NUMBER OF AWARDED VENDORS WILL BE TWO (2).
GROUPED LINES:
GROUP A: LINES 2, 3, 4, 5
GROUP B: Lines 1, 4, 6
ITEM 1000170688 SPECIFICATION
TRAILER MOUNTED ATTENUATOR Mid Axle Design
THE COMPLETE TRAILER MOUNTED ATTENUATOR (TMA) SHALL BE DESIGNED TO MAKE ATTACHMENT OR DETACHMENT FROM THE TRUCK SIMPLE AND FAST WITH A 20 TON PINTLE HITCH. THE TRAILER
MOUNTED ATTENUATOR MUST BE CAPABLE OF BEING TOWED BY VEHICLES WITH SIZES RANGING
FROM 13,500 GVW TO 25,000 GVW AND STILL MEET ALL MASH-2016 TESTS OUTLINED BELOW. THE
TMA FRAME SHALL BE CAPABLE OF COLLAPSING WHEN IMPACTED BY AN ERRANT VEHICLE. NO
PORTION OF THE TMA SHALL PROTRUDE FORWARD UNDER THE TRUCK DAMAGING ITS VITAL ELEMENTS
DURING AN IMPACT.
TMA SYSTEM MUST BE DELIVERED ASSEMBLED AND READY FOR USE
THE TRAILER MOUNTED ATTENUATOR WILL CONSIST OF THE FOLLOWING MAJOR COMPONENTS:
1- TONGUE ASSEMBLY AND A REAR IMPACT PLATE
2- ENERGY ABSORBING MODULES
3- SUNSPENSION, AXLE, AND WHEELS.
MINIMUM WEIGHT AND DIMENSIONS
LENGTH- 17’ 10”
WIDTH- 7’
HEIGHT- 36”
WEIGHT- 1,925 LBS W/O ATTACHED FLASHING ARROWBOARD
ONE TOP WIND JACK WITH A TOTAL RATED CAPACITY OF AT LEAST 1200LBS SHALL BE SUPPLIED WITH
THE TMA TO FACILITATE REMOVING IT FROM A TRUCK FOR STORAGE
THE TMA SHALL MEET ALL 4 TESTS THAT FALL UNDER THE GUIDELINES OF MASH-2016 TEST LEVEL 3 FOR
TRUCK MOUNTED ATTENUATORS.
THE TMA SHALL HAVE A TRAILER LIGHTING ASSEMBLY PER FMVSS NO. 108 “LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT.” ALL COMPONENTS SHALL BE APPROPRIATE FOR THEIR
INTENDED PURPOSE UNDER ANY ADOPTIONS ISSUED BY THE NHTSA, SAE AND FMVSS. THIS IS
STANDARD PRACTICE FOR ELECTRICAL LIGHTING. THE TMA SHALL INCLUDE BRAKE LIGHTS, TAILLIGHTS, TURN SIGNALS AND AN ICC BAR LIGHT. MOLDED CONNECTORS SHALL BE USED WHERE INDIVIDUAL WIRES WOULD OTHER WISE BE EXPOSED TO THE ELEMENTS. A STANDARD, SINGLE, 7 PIN TRAILER CONNECTOR SHALL MAKE THE CONNECTION FOR ALL LIGHTS AND ARROW BOARD TO THE BACK OF THE
TRUCK.
THE SURFACE OF THE IMPACT FRAME FACING ONCOMING TRAFFIC SHALL DISPLAY A BLACK ON YELLOW
INVERTED CHEVRON PATTERN WITH 4 IN. WIDE COLOR BANDS. THE COLORS SHALL MEET
THE VALUE AND TOLERANCE LIMITS ESTABLISHED BY MANUAL ON UNIFORM TRAFFIC CONTROL
DEVICES (MUTCD).
ALL EXPOSED STEEL SURFACES SHALL BE POWDER COATED OR GALVANIZED TO MINIMIZE CORROSION.
ACCEPTABLE BRANDS/MODELS: SMT BY VALTIR OR EQUAL
THE TRAILER MOUNTED ATTENUATOR TO BE ORDERED WITH AN ARROW BOARD PER THE FOLLOWING
SPECIFICAITONS.
FLASHING ARROW BOARD WITH TRAILER ATTENUATOR MOUNTING SYSTEM SPECIFICATIONS
THE FLASHING ARROW BOARD WITH TRAILER MOUNTING SYSTEM SHALL CONSIST OF ARROW BOARD
MEETING THE MINUMUM REQUIREMENTS BELOW AND INCLUDE A MOUNTING SYSTEM APPROVED BY
THE TRAILER ATTENUATOR MANUFACTURER THAT PROPERLY SECURES THE ARROW BOARD TO THE
ATTENUATOR TRAILER. ARROW BOARD SHALL BE POWERED UTILIZING THE 7 PIN CONNECTION OF THE
TRAILER ATTENUATOR.
THE FLASHING ARROW BOARD WITH TRAILER ATTENUATOR MOUNITING SYSTEM WILL CONSIST OF THE
FOLLOWING MAJOR COMPONENTS:
1- 48H X 96” W FRAME
2- 15 LIGHT PAR 46 LED LAMP WITH REATINING RINGS AND VISORS
3- WEATHERPROOF HOUSING FOR REMOTE STORAGE
4- 30’ REMOTE CABLE
5- MANUAL TILT DEVICE FOR RAISING AND LOWERING
FLASHING ARROW BOARD SHALL MEET THE REQUIREMENTS OF THE MUTCD FOR A TYPE C ARROW
BOARD.
ITEM 1000170689 SPECIFICATION
Truck Mounted Attenuator, Rear Axle Design
1A. GENERAL ASSEMBLY
THE COMPLETE TRAILER MOUNTED ATTENUATOR (TMA) SHALL BE DESIGNED TO MAKE ATTACHMENT
OR DETACHMENT FROM THE TRUCK SIMPLE AND FAST WITH A 20 TON PINTLE HITCH. MAJOR
COMPONENTS (LISTED BELOW) STAY TOGETHER WHEN DETACHED FROM THE SUPPORT VEHICLE. THE TRAILER MOUNTED ATTENUATOR MUST BE CAPABLE OF BEING TOWED BY A VARIETY OF VEHICLES
WITH SIZES RANGING FROM 13,500 GVW TO 25,000 GVW AND STILL MEET ALL MASH-2016 TESTS
OUTLINED BELOW. THE TMA FRAME SHALL BE CAPABLE OF COLLAPSING WHEN IMPACTED BY AN
ERRANT VEHICLE. NO PORTION OF THE TMA SHALL PROTRUDE FORWARD UNDER THE TRUCK
DAMAGING ITS VITAL ELEMENTS DURING AN IMPACT.
THE TMA SYSTEM MUST BE DELIVERED ASSEMBLED AND READY FOR MOUNTING ON SUPPORT VEHICLE.
1B. MAJOR COMPONENTS
THE TRAILER MOUNTED ATTENUATOR WILL CONSIST OF THE FOLLOWING MAJOR COMPONENTS:
1- CURVED ALUMINUM TUBE FRAMES
2- FOUR (4) ALUMINUM ENERGY ABSOBING MODULES
3- REAR MOUNTED SUSPENSION, AXLE, AND WHEELS W/ FENDERS
4- TELESCOPING ANT-ROTATION SYSTEM
5- ATTACHED 48” X 96”ARROW BOARD WITH MOUNTING BRACKET ASSEMBLY INSTALLED
AND REAFY TO DEPLOY
1C. MINIMUM WEIGHT AND DIMENSIONS
LENGTH- 17’ 10”
WIDTH- 8’
HEIGHT- 36”
WEIGHT- 1,925 LBS W/O ATTACHED FLASHING ARROWBOARD
1D. JACK
ONE HAND CRANK JACK WITH SWIVEL CASTER WITH A TOTAL RATED LOAD
CAPACITY OF AT LEAST 272 KG (600LBS) SHALL BE SUPPLIED WITH THE TMA
TO FACILITATE REMOVING IT FROM A TRUCK FOR STORAGE.
1E. PAINT
ALL EXPOSED STEEL SURFACES ON THE TMA SHALL BE PAINTED BLACK. PAINT
SHALL BE APPLIED AFTER THE PROPER PREPARATION OF ALL STEEL AND
ALUMINUM COMPONENTS. THE METAL PREPARATION SHALL INCLUDE CLEANING,
DEGREASING AND ABRADING THE METAL SURFACE. PRIMER SHALL BE USED IF
NOT POWDER COATED.
1F. CRASH TESTING CRITERIA
THE TMA SHALL HAVE BEEN TESTED TO, AND SUCCESFULLY PASSED ALL 4 TESTS THAT FALL UNDER THE
GUIDELINES OF MASH-2016 TEST LEVEL 3 FOR TRUCK MOUNTED ATTENUATORS.
1G. LIGHTING AND VISIBILITY
THE TMA SHALL HAVE A TRAILER LIGHTING ASSEMBLY PER FMVSS NO. 108 “LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT.” ALL COMPONENTS SHALL BE APPROPRIATE FOR THEIR
INTENDED PURPOSE UNDER ANY ADOPTIONS ISSUED BY THE NHTSA, SAE AND FMVSS. THIS IS
STANDARD PRACTICE FOR ELECTRICAL LIGHTING. THE TMA SHALL INCLUDE BRAKE LIGHTS, TAILLIGHTS, TURN SIGNALS AND AN ICC BAR LIGHT. MOLDED CONNECTORS SHALL BE USED WHERE INDIVIDUAL WIRES WOULD OTHER WISE BE EXPOSED TO THE ELEMENTS. A STANDARD, SINGLE, 7 PIN TRAILER
CONNECTOR SHALL MAKE THE CONNECTION FOR ALL LIGHTS AND ARROW BOARD TO THE BACK OF THE
TRUCK.
THE SURFACE OF THE IMPACT FRAME FACING ONCOMING TRAFFIC SHALL DISPLAY A BLACK ON YELLOW
INVERTED CHEVRON PATTERN WITH 4 IN. WIDE COLOR BANDS. THE COLORS SHALL MEET
THE VALUE AND TOLERANCE LIMITS ESTABLISHED BY MUTCD.
1H. ACCEPTABLE BRANDS/MODELS
SCORPION II TRAILER ATTENUATOR BY TRAFFIX DEVICES, INC OR EQUAL
ITEM 1000170691 SPECIFICATION
Truck Mounted Attenuator, Fold in Bed Storage and Transport
1A. GENERAL ASSEMBLY
THE COMPLETE TRUCK MOUNTED ATTENUATOR (TMA) SHALL BE DESIGNED TO MAKE ATTACHMENT TO A VARIETY OF SUPPORT VEHICLES AND BE RAISED AND LOWERED FROM INSIDE THE CAB OF THE SUPPORT VEHICLE. MAJOR COMPONENTS (LISTED BELOW) STAY TOGETHER WHEN DETACHED FROM THE SUPPORT VEHICLE. THE TRUCK MOUNTED ATTENUATOR MUST BE CAPABLE OF BEING MOUNTED TO A VARIETY OF VEHICLES WITH SIZES RANGING FROM 13,500 GVW TO 25,000 GVW AND STILL MEET ALL MASH-2016 TESTS OUTLINED BELOW. THE TMA FRAME SHALL BE CAPABLE OF COLLAPSING WHEN IMPACTED BY AN ERRANT VEHICLE. NO PORTION OF THE TMA SHALL PROTRUDE FORWARD UNDER THE
TRUCK DAMAGING ITS VITAL ELEMENTS DURING AN IMPACT.
THE TMA SYSTEM MUST BE DELIVERED ASSEMBLED AND READY FOR ATTACHMENT TO SUPPORT
VEHICLE. STANDARD MOUNTING HARDWARE THAT WAS USED IN CRASH TESTING CERTIFICATION SHALL
BE PROVIDED WITH ATTENUATOR.
1B. MAJOR COMPONENTS
THE TRUCK MOUNTED ATTENUATOR WILL CONSIST OF THE FOLLOWING MAJOR COMPONENTS:
1- STEEL BACKUP FOR ATTACHMENT TO HOST VEHICLE W/ SUPPORT STRUCTURE
2- CURVED ALUMINUM TUBE FRAMES
3- FOUR (4) ALUMINUM ENERGY ABSORBING MODULES
4- HYDRAULIC SYSTEM CAPABLE OF RAISING THE SYSTEM SO THAT THE REAR SECTION RESTS
HORIZONTALLY OVER THE BED OF THE HOST VEHICLE
1C. MINIMUM WEIGHT AND DIMENSIONS
LENGTH- 12’- 10”
WIDTH- 96”
HEIGHT- 36”
WEIGHT- 1,975LBS
1D. CRASH TESTING CRITERIA
GUIDELINES OF MASH-2016 TEST LEVEL 3 FOR TRUCK MOUNTED ATTENUATORS.
1E. LIGHTING AND VISIBILITY
THE TMA SHALL HAVE A LIGHTING ASSEMBLY PER FMVSS NO. 108 LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT. ALL COMPONENTS SHALL BE APPROPRIATE FOR THEIR INTENDED PURPOSE
UNDER ANY ADOPTIONS ISSUED BY THE NHTSA, SAE AND FMVSS. THIS IS STANDARD
PRACTICE FOR ELECTRICAL LIGHTING. THE TMA SHALL INCLUDE BRAKE LIGHTS, TAILLIGHTS, TURN SIGNALS AND AN ICC BAR LIGHT. WIRES SHALL BE ROUTED IN A PROTECTIVE, JACKETED CABLE.
MOLDED CONNECTORS SHALL BE USED WHERE INDIVIDUAL WIRES WOULD OTHER WISE BE EXPOSED TO THE ELEMENTS. A STANDARD, SINGLE, 7 PIN TRAILER CONNECTOR SHALL MAKE THE CONNECTION
FOR ALL LIGHTS TO THE BACK OF THE TRUCK.
THE SURFACE OF THE IMPACT FRAME FACING ONCOMING TRAFFIC SHALL DISPLAY A BLACK ON YELLOW
INVERTED CHEVRON PATTERN WITH 4 IN. WIDE COLOR BANDS. THE COLORS SHALL MEET
THE VALUE AND TOLERANCE LIMITS ESTABLISHED BY MUTCD.
1F. ACCEPTABLE BRANDS/MODELS
SCORPION II ATTENUATOR BY TRAFFIX DEVICES, INC OR EQUAL
LINE ITEM 100170692 SPECIFICATION
Truck Mounted Attenuator, 180 Degree Tilt
1A. GENERAL ASSEMBLY
THE COMPLETE TRUCK MOUNTED ATTENUATOR (TMA) SYSTEM SHALL BE DESIGNED TO MAKE
ATTACHMENT TO A VARIETY OF SUPPORT VEHICLES AND BE RAISED AND LOWERED FROM INSIDE THE CAB OF THE SUPPORT VEHICLE. TMA SYSTEM SHALL BE RAISED AND LOWERED 180 DEGREES. MAJOR COMPONENTS (LISTED BELOW) STAY TOGETHER WHEN DETACHED FROM THE SUPPORT VEHICLE. THE TRUCK MOUNTED ATTENUATOR MUST BE CAPABLE OF BEING MOUNTED TO A VARIETY OF VEHICLES WITH SIZES RANGING FROM 13,500 GVW TO 25,000 GVW AND STILL MEET ALL MASH-2016 TESTS
OUTLINED BELOW. THE TMA FRAME SHALL BE CAPABLE OF COLLAPSING WHEN IMPACTED BY AN
ERRANT VEHICLE. NO PORTION OF THE TMA SHALL PROTRUDE FORWARD UNDER THE TRUCK
DAMAGING ITS VITAL ELEMENTS DURING AN IMPACT.
THE TMA SYSTEM MUST BE DELIVERED ASSEMBLED AND READY FOR ATTACHMENT TO SUPPORT
VEHICLE. STANDARD MOUNTING HARDWARE THAT WAS USED IN CRASH TESTING CERTIFICATION SHALL
BE PROVIDED WITH ATTENUATOR.
1B. MAJOR COMPONENTS
THE TRUCK MOUNTED ATTENUATOR WILL CONSIST OF THE FOLLOWING MAJOR COMPONENTS:
1- STEEL SUPPORT STRUCTURE CONSISTING OF A BACKUP ASSEMBLY, ARTICULATING
CONNECTING ARMS, FOLDING INTERMEDIATE FRAME, AND A REAR IMPACT PLATE.
2- DUAL (2) CARTRIDGE ATTENUATION SYSTEM.
3- STEEL BACKUP FOR ATTACHMENT TO HOST VEHICLE.
4- HYDRAULIC SYSTEM CAPABLE OF RAISING AND STORING THE REAR SECTION OF THE SYSTEM
180 DEGREES FOR TRANSPORT AND STORAGE
1C. MINIMUM WEIGHT AND DIMENSIONS
LENGTH- 176.5”
WIDTH- 82”
HEIGHT- 50”
WEIGHT- 2,033 LBS
1D. CRASH TESTING CRITERIA
GUIDELINES OF MASH-2016 TEST LEVEL 3 FOR TRUCK MOUNTED ATTENUATORS.
1E. LIGHTING AND VISIBILITY
THE TMA SHALL HAVE A LIGHTING ASSEMBLY PER FMVSS NO. 108 LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT. ALL COMPONENTS SHALL BE APPROPRIATE FOR THEIR INTENDED PURPOSE
UNDER ANY ADOPTIONS ISSUED BY THE NHTSA, SAE AND FMVSS. THIS IS STANDARD
PRACTICE FOR ELECTRICAL LIGHTING. THE TMA SHALL INCLUDE BRAKE LIGHTS, TAILLIGHTS, TURN SIGNALS AND AN ICC BAR LIGHT. WIRES SHALL BE ROUTED IN A PROTECTIVE, JACKETED CABLE.
MOLDED CONNECTORS SHALL BE USED WHERE INDIVIDUAL WIRES WOULD OTHER WISE BE EXPOSED TO THE ELEMENTS. A STANDARD, SINGLE, 7 PIN TRAILER CONNECTOR SHALL MAKE THE CONNECTION
FOR ALL LIGHTS TO THE BACK OF THE TRUCK.
THE SURFACE OF THE IMPACT FRAME FACING ONCOMING TRAFFIC SHALL DISPLAY A BLACK ON YELLOW
INVERTED CHEVRON PATTERN WITH 4 IN. WIDE COLOR BANDS. THE COLORS SHALL MEET
THE VALUE AND TOLERANCE LIMITS ESTABLISHED BY MUTCD.
1F. ACCEPTABLE BRANDS/MODELS
SS180 M BY VALTIR OR EQUAL
ITEM 1000170693 SPECIFICATION
Truck Mounted Attenuator Tailgate Mounting System
1A. GENERAL ASSEMBLY
THE TRUCK MOUNTED ATTENUATOR (TMA) TAILGATE MOUNTING SYSTEM IS DESIGNED FOR QUICK
INSTALLATION ON THE TAILGATE OF DUMP TRUCKS WITH GROSS VEHICLE WEIGHT (GVW) RANGES
BETWEEN 13,500 LB. AND 25,000 LB. TMA TAILGATE MOUNT SYSTEM SHALL UTILIZE THE DUMP BED OF
THE TRUCK FOR QUICKLY MOUNTING THE TMA AND ALL ITS COMPONENTS.
THE TMA TAILGATE MOUNTING SYSTEM SHALL ALLOW FOR ADJUSTMENT TO COMPENSATE FOR
TAILGATE HEIGHTS FROM 5.25 TO 8.3 FT AND TAILGATE THICKNESS FROM 3 TO 4.5 INCHES
1B. MAJOR COMPONENTS
THE TMA TAILGATE MOUNTING SYSTEM WILL CONSIST OF THE FOLLOWING MAJOR COMPONENTS:
1- SPACER FRAME
2- TWO (2) TAILGATE HANGERS
3- TWO (2) TAILGATE RETAINING CLIPS
4- TWO (2) UNDERRIDE STRUTS
5- TWO (2) TURNBUCKLE ASSEMBLIES
1D. ACCEPTABLE BRANDS/MODELS
003524384-00 TAILGATE MOUNT ASSEMBLY BY VALTIR OR EQUAL
Catalog Parts Discount
Vendor to provide a catalog of replacement parts and optional parts/accessories. All awarded contracts will have additional funding added to the contract maximum liability to cover the costs of replacement and optional parts found in the catalog. Funds will be split equally between multiple awards if more than one Vendor is awarded a contract.
• REPLACEMENT PARTS (Estimated spend $100,000)
• OPTIONAL PARTS (Estimated spend $100,000)
Delivery Locations
• 1035 Maintenance Lane, Knoxville, TN 37901 Contact: David Leake – (865) 594-2697
• 7492 Volkswagen Drive., Chattanooga, TN 37416 Contact: Lonnie Hinkle – (423) 510-1260
• 6601 Centennial Blvd., Nashville, TN 37243 Contact: Randy Maness – (731) 747-5014
• 200 Benchmark Place, Jackson, TN 38301 Contact: Josh Waller – (731) 935-0265
File details come from the government source that posted it. Updated .