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                Safety Eligibility Letter CC-35L
  
  **Hardware Type:**
            Barrier Terminals and Crash Cushions
                          **Code:**
            CC-35L
                          **Date:**
            12/18/2015
                          **Testing Criteria:**
            NCHRP 350
                          **Manufacturer:**
            Trinity Highway Products
                          **Device Description:**
            QuadGuard System modification
                          **View PDF:**
            cc35l.pdf (1.42 MB)
    
    Safety Eligibility Letter CC-35L

			**Download Version**PDF [1.41 MB]

			

			DOT logoU.S. Department of Transportation**Federal Highway Administration**

			1200 New Jersey Ave. S.E.Washington, D.C. 20590

December 18, 2015
In Reply Refer To: 
  HSST/CC-35L
Mr. Bret Eckert P.E.
  Engineering Applications Manager
  Trinity Highway Products
  3617 Cincinnati Avenue
  Rocklin, CA 95677
Dear Mr. Eckert:
This letter is in response to your August 1, 2014 request  for the Federal Highway Administration (FHWA) to review a roadside safety  device, hardware, or system for eligibility for reimbursement under the  Federal-aid highway program. This FHWA  letter of eligibility is assigned FHWA control number CC-35L and is valid until  a subsequent letter is issued by FHWA that expressly references this device.
**Decision**
  The following devices are eligible, with details provided  in the form which is attached as an integral part of this letter:
QuadGuard System Modification***Scope of this  Letter***
To be found eligible for Federal-aid funding, modified  roadside safety devices should meet the crash test and evaluation criteria  contained in the National Cooperative Highway Research Program (NCHRP) Report  350. However, the FHWA, the Department of Transportation, and the United States  Government do not regulate the manufacture of roadside safety devices.  Eligibility for reimbursement under the Federal-aid highway program does not  establish approval, certification or endorsement of the device for any  particular purpose or use.
This letter is not a  determination by the FHWA, the Department of Transportation, or the  United States Government that a vehicle  crash involving the device will result in any particular outcome, nor is it a  guarantee of the in-service performance of this device. Proper manufacturing,  installation, and maintenance are required in order for this device to function  as tested.
This finding of eligibility is limited to the  crashworthiness of the system and does not cover other structural features, nor  conformity with the Manual on Uniform Traffic Control Devices.
***Eligibility for  Reimbursement***
FHWA previously issued an eligibility letter for the  roadside safety system described in your pending request. Your pending request  now identifies a modification to that roadside safety system.
The original roadside safety device information is provided  here:
Name of system:
QuadGuardType of system:
  Crash CushionDate of original request:
  February  20, 1996Date of original FHWA eligibility letter:
June 21, 1996FHWA Control number:
CC-35The modification(s)  to the QuadGuard covered by this letter are:
Modified  the QuadGuard Product Manual to the current Trinity Highway format. In addition, the recommended anchor torque  value for asphalt was improved from <10 ft-lbs to 10 ft-lbs.
Modified  the dimension format on the QuadGuard cartridge box from decimal to fractional  and changed the molded in company name.  Adjusted the tolerances that are consistent with typical blow molding  process capabilities for items this size. Improved identification of the cartridge type on the outside of the box  from self-adhesive decal to painted on cartridge type.
Improved  the diaphragm lower reinforcements horizontal fillet weld by increasing total  weld length on each surface from 17" to 18".
Improved  the hinge pivot attachment on the diaphragm hinge plates.
Improved  the method of ensuring consistent preloading of the fender panel rear tension  springs from compressing 1/16" to 1/8", to tightening the nut on  mushroom washer bolt until it reaches end of threads. This method eliminates nut loosening and  maintains consistent fender panel end gap.  The protective coating on the fender panel springs was improved from  power coated to mechanically galvanized.  The spring rate will be unchanged yielding superior corrosion  protection.
Modified  the channel used for QuadGuard transition bracing by adding a 1" ×  11/16" slot for galvanizing drainage.
Modified  the steel nose on QuadGuard II by adding a small ink "W" letter on  the side below the attachment holes for identification of wide nose components.FHWA concurs with the recommendation of the accredited crash  testing laboratory as stated within the attached form.

***Full Description  of the Eligible Device***
The device and supporting documentation, including reports  of the crash tests or other testing done, videos of any crash testing, and/or  drawings of the device, are described in the attached form.
***Notice***
If a  manufacturer makes any modification to any of their roadside safety hardware  that has an existing eligibility letter from FHWA, the manufacturer must notify  FHWA of such modification with a request for continued eligibility for  reimbursement. The notice of all  modifications to a device must be accompanied by:

  Significant modifications – For these modifications, crash        test results must be submitted with accompanying documentation and        videos.
    Non-signification modifications – For these modifications, a        statement from the crash test laboratory on the potential effect of the        modification on the ability of the device to meet the relevant crash test        criteria.FHWA's determination of continued  eligibility for the modified hardware will be based on whether the modified  hardware will continue to meet the relevant crash test criteria.
You are expected to supply potential users with sufficient  information on design, installation and maintenance requirements to ensure  proper performance.
You are expected to certify to potential users that the  hardware furnished has the same chemistry, mechanical properties, and geometry  as that submitted for review, and that it will meet the test and evaluation  criteria of the NCHRP Report 350.
Issuance of this  letter does not convey property rights of any sort or any exclusive privilege.  This letter is based on the premise that information and reports submitted by  you are accurate and correct. We reserve the right to modify or revoke  this letter if: (1) there are any  inaccuracies in the information submitted in support of your request for  this letter, (2) the qualification testing was flawed, (3) in-service  performance or other information reveals safety problems, (4) the system is  significantly different from the version that was crash tested, or (5) any  other information indicates that the letter was issued in error or otherwise  does not reflect full and complete information about the crashworthiness of the  system.

***Standard Provisions***

To prevent misunderstanding by others, this letter of       eligibility designated as FHWA control number CC-35L shall not be       reproduced except in full. This       letter and the test documentation upon which it is based are public information. All such letters and documentation may       be reviewed upon request.
  This letter shall not be construed as authorization or       consent by the FHWA to use, manufacture, or sell any patented system for       which the applicant is not the patent holder.
  If the subject device is a patented product it may be       considered to be proprietary. If       proprietary systems are specified by a highway agency for use on       Federal-aid projects: (a) they must be supplied through competitive       bidding with equally suitable unpatented items; (b) the highway agency       must certify that they are essential for synchronization with the existing       highway facilities or that no equally suitable alternative exists; or (c)       they must be used for research or for a distinctive type of construction       on relatively short sections of road for experimental purposes. Our regulations concerning proprietary       products are contained in Title 23, Code of Federal Regulations, Section 635.411.Sincerely yours,
			Signature of George E. Rice, Jr.
			Michael S. Griffith
Director,  Office of Safety Technologies
              Office of SafetyEnclosures U.S. DEPARTMENT OF TRANSPORTATION

**Federal Highway Administration**

1200 NEW JERSEY AVENUE, SE

WASHINGTON, DC 20590

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