1200 New Jersey Ave., SE

 Washington, D.C. 20590

February 1, 2013

FHWA:HSST:NArtimovich:sf:x61331:1/29/13

File: s://directory folder/HSST/ WZ321_ROSA.docx

cc: HSST (NArtimovich; BFouch

In Reply Refer To:

 HSST/WZ-321

Mr. John Williams

Roundspring Technologies, Inc.

8714 West Farm Road 124

Springfield, Missouri 65802

Dear Mr. Williams:

This letter is in response to your request for the Federal Highway Administration (FHWA) to 

review a roadside safety system for eligibility for reimbursement under the Federal-aid highway 

program.

Name of system: Remote Operated Safety Attendant (ROSA)

Type of system: Portable Flagger for work zones

Test Level: MASH Test Level 3

Testing conducted by: E-TECH Testing Services

Task Force 13 Designator: TBD

Date of request: September 4, 2012

Decision:

The following device is eligible, with details provided in the form which is attached as an 

integral part of this letter:

• Roundspring Technologies Remote Operated Safety Attendant (ROSA)

Based on a review of crash test results submitted by the manufacturer certifying the device 

described herein meets the crash test and evaluation criteria of the American Association of State 

Highway and Transportation Officials’ Manual for Assessing Safety Hardware (MASH), the 

device is eligible for reimbursement under the Federal-aid highway program. Eligibility for

reimbursement under the Federal-aid highway program does not establish approval or 

endorsement by the FHWA for any particular purpose or use.

The FHWA, the Department of Transportation, and the United States Government do not 

endorse products or services and the issuance of a reimbursement eligibility letter is not an 

endorsement of any product or service.
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Requirements

To be found eligible for Federal-aid funding, roadside safety devices should meet the crash test 

and evaluation criteria contained in the American Association of State Highway and 

Transportation Officials’ Manual for Assessing Safety Hardware (MASH). 

Description

The device and supporting documentation are described in the attached form and documentation. 

The attached August 27, 2012, letter from John La Turner of E-Tech Testing Services supports 

waiver of MASH Test 3-72.

Summary and Standard Provisions

Therefore, the system described and detailed in the attached form and drawing is eligible for 

reimbursement and may be used under the range of conditions tested.

Please note the following standard provisions that apply to FHWA eligibility letters:

• This finding of eligibility does not cover other structural features of the systems, nor 

conformity with the Manual on Uniform Traffic Control Devices.

• Any changes that may influence system conformance with MASH will require a new 

reimbursement eligibility letter.

• Should the FHWA discover that the qualification testing was flawed, that in-service 

performance reveals safety problems, or that the system is significantly different from 

the version that was crash tested, we reserve the right to modify or revoke this letter.

• You are expected to supply potential users with sufficient information on design and 

installation 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 critiera of the MASH. 

• This letter notes the AASHTO/ARTBA/AGC Task Force 13 designator is yet to be 

determined, as portable / temporary work zone signs are not yet included in the Task 

Force 13 on-line guides. 

• To prevent misunderstanding by others, this letter of eligibility is designated as 

number WZ-321 and 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 at our office 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. The FHWA does not become involved in issues concerning patent law. 

Patent issues, if any, are to be resolved by the applicant.
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• The Roundspring Technologies Remote Operated Safety Assistant is a patented 

product and considered 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,

Michael S. Griffith

Director, Office of Safety Technologies

Office of Safety

Enclosures