March 3, 2023

1200 New Jersey Ave., SE 

Washington, D.C. 20590 

In Reply Refer To: 

HSST-1/SS-189 

Bret R. Eckert 

Trinity Highway Products, LLC 

15601 Dallas Parkway, Suite 525 

Addison, TX 75001 

USA 

Dear Mr. Eckert: 

We received your correspondence of February 11, 2022 requesting issuance of a reimbursement 

eligibility letter under the Federal-aid highway program for the roadside safety system, device, 

design, product, or hardware (collectively “device”) described below. This letter is assigned 

Federal Highway Administration (FHWA) control number SS-189. 

ELIGIBILITY LETTERS 

The FHWA issues Federal-aid reimbursement eligibility letters for new roadside safety devices 

that are crash tested in accordance with the industry standard of the American Association of 

State Highway and Transportation Officials (AASHTO) Manual for Assessing Safety Hardware 

(MASH). 

FHWA, the Department of Transportation, and the United States (government) do not regulate 

roadside safety devices, crash test facilities, or the manufacturing industry. Issuance of 

eligibility letters is discretionary and provided only as a service to the states. FHWA may, at its 

discretion, decline to issue, revise, or rescind an eligibility letter. Eligibility letters are only 

issued by the FHWA headquarters Office of Safety. 

Eligibility letters are issued only as notice to the states that a device is eligible for reimbursement 

under the Federal-aid highway program. They do not establish approval or certification for any 

other purpose. Issuance of an eligibility letter is not a prerequisite or requirement for state 

transportation agencies seeking to use Federal-aid funds for roadside safety devices. State 

agencies may use a device for which an eligibility letter has not been issued and seek Federal-aid 

reimbursement. 

FEDERAL-AID REIMBURSEMENT 

The request for issuance of this letter certified the device was crash tested in accordance with the 

industry standard of AASHTO’s MASH. This eligibility letter is based on that certification and 

the material offered in support of its issuance. The device described below is eligible for 

reimbursement under the Federal-aid highway program. 

1 
 

 

 

 

 

 

 

 

 

 

 

Name of system: S-Q 8 Slip Base Perforated, 3-Post Sign Support System 

Type of system: Sign Support 

Test Level: Test Level 3 

Testing conducted by: Applus IDIADA KARCO Engineering, LLC 

Date of request: February 11, 2022 

Information about the device, including material such as the eligibility request, crash test reports, 

drawings, or images are included in one or more attachment(s) to this letter. 

Eligibility letter SS-189 is inapplicable to devices, optional equipment, alternate materials, or 

other features that were not crash tested in accordance with AASHTO’s MASH. 

This letter is issued only for the subject device as crash tested under AASHTO’s MASH. Later 

modification(s) of the device are not eligible for Federal-aid reimbursement under this letter. 

Notice of later modification(s) should be given to transportation agencies, facility owners, and 

operators (collectively “agencies”). 

Agencies should be provided appropriate information about the device’s design, installation, 

maintenance, materials, and mechanical properties. 

Issuance of this letter is discretionary, and it may be revised or rescinded at FHWA’s discretion. 

This letter is not a determination of compliance with the Manual on Uniform Traffic Control 

Devices for Streets and Highways (MUTCD) or ownership of any intellectual property rights. 

This eligibility letter is not a determination by the government that a crash involving the subject 

device will result in any particular outcome. It is limited to only the device’s eligibility for 

Federal-aid reimbursement. 

INTELLECTUAL PROPERTY 

Issuance of this eligibility letter does not convey property rights of any sort nor any exclusive 

privilege. This letter is not authorization or consent by the government for the use, manufacture, 

or sale of any patented or proprietary system, device, design, product, or hardware for which the 

requester is not the patent owner. Eligibility letters are not an expression of any view, position, 

or determination by the government as to the validity, scope, or ownership of any intellectual 

property rights to a specific device. These letters do not grant, impute, suggest, or otherwise 

establish any ownership, distribution, or licensing rights to the requester. The government 

expresses no opinion about the intellectual property rights relating to any device for which this or 

any other eligibility letter is issued. 

PUBLIC DISCLOSURE 

To prevent any misunderstanding, and as discussed above, this eligibility letter is assigned 

FHWA control number SS-189. It should only be reproduced in full with its attachment(s). This 

letter and the material offered by the requester supporting its issuance is public information. All 

eligibility letters and supporting material are subject to public disclosure under the Freedom of 

2 
 

 

Information Act (FOIA). Eligibility letters are available to the public at 

https://safety.fhwa.dot.gov/roadway_dept/countermeasures/reduce_crash_severity/. 

If you have any questions please contact Aimee Zhang at Aimee.Zhang@dot.gov. 

Sincerely, 

Amy Jackson-Grove 

Acting Director, Office of Safety 

Technologies 

Office of Safety 

Enclosures 

3 
 Version 10.0 (05/16) 

Page 1 of 5 

Request for Federal Aid Reimbursement Eligibility

of Highway Safety Hardware 

Submitter

 Date of Request: February 11, 2022 New Resubmission 

Name: Bret R. Eckert, P.E. 

Company: Trinity Highway Products, LLC 

Address: 15601 Dallas Parkway, Suite 525, Addison, TX 75001 

Country: USA

 To: Michael S. Griffith, Director 

FHWA, Office of Safety Technologies 

I request the following devices be considered eligible for reimbursement under the Federal-aid 

highway program. 

Device & Testing Criterion - Enter from right to left starting with Test Level ! - ! - ! 

System Type Submission Type Device Name / Variant Testing Criterion Test 

Level 

'SS': Breakaway Sign 

Supports, Mailboxes, & 

other small sign supports 

Physical Crash Testing 

Engineering Analysis 

S-Q 8 Slip Base, 

Perforated, 3-Post Sign 

Support System 

AASHTO MASH TL3 

By submitting this request for review and evaluation by the Federal Highway Administration, I certify 

that the product(s) was (were) tested in conformity with the AASHTO Manual for Assessing Safety 

Hardware and that the evaluation results meet the appropriate evaluation criteria in the MASH. 

Individual or Organization responsible for the product: 

Contact Name: Jim Crowley Same as Submitter 

Company Name: Trinity Highway Products, LLC Same as Submitter 

Address: 15601 Dallas Parkway, Suite 525, Addison, TX 75001 Same as Submitter 

Country: USA Same as Submitter 

Enter below all disclosures of financial interests as required by the FHWA `Federal-Aid Reimbursement 

Eligibility Process for Safety Hardware Devices' document. 

The S-Q 8 Slip Base, Perforated, 3-Post Sign Support System technology is the commercial embodiment of 

intellectual property that is owned by Trinity Highway Products, LLC ("THP"). THP does not pay royalties for sales 

of the S-Q 8 Slip Base, Perforated, 3-Post Sign Support System. The S-Q 8 Slip Base, Perforated, 3-Post Sign 

Support System was designed and developed by engineers at THP. 

Applus IDIADA KARCO Engineering, LLC ("KARCO") conducted the certification tests of the S-Q 8 Slip Base, 

Perforated, 3-Post Sign Support System. KARCO is an internationally accredited third party crash testing 

laboratory. Physical crash testing of the S-Q 8 Slip Base, Perforated, 3-Post Sign Support System was performed 

in accordance with testing criteria, as set forth by the American Association of State Highway and Transportation 

Officials ("AASHTO") in the Manual for Assessing Safety Hardware - 2nd Edition, with 2020 Errata ("MASH") (2016). 

Other than fees paid to KARCO to conduct the tests and then analyze and report the test results, KARCO and THP 

do not share financial interests. The fees paid to KARCO were not dependent or contingent on the results of the 

tests. 
 Version 10.0 (05/16) 

Page 2 of 5 

PRODUCT DESCRIPTION 

New Hardware or Modification to 

Significant Modification Existing Hardware 

The S-Q 8 Slip Base, Perforated, 3-Post Sign Support System consists of three, 2-1/2 inch x 12 gauge perforated 

square steel tube signposts inserted into three slip base castings. The signposts are punched with Ø7/16 inch 

holes spaced on one inch centers along the length on all four sides. The signposts are secured to the slip base 

castings with two Ø3/8 inch shoulder bolts and nuts. The slip base castings are secured to the slip base stubs 

with three Ø1/2 inch bolts and nuts. A bolt keeper plate is sandwiched between the slip base casting and the 

slip base stub. The anchor sleeves are 3 inch x 7 gauge square steel tube, 36 inches long with a 12 inch x 18 

inch x 3/16 inch soil plate welded to it. The anchors are embedded in soil such that the slip base stub top 

plates are a maximum of 4 inches above grade. A 72 inch tall x 96 inch wide x 0.080 inch thick aluminum sign 

panel with reflective sheeting is secured to the signposts with a U-channel and clamp system. The sign is 

secured to three U-channel sections using Ø3/8 inch bolts and nuts. The sign is mounted at a height of 7 feet 4 

1/2 inches above grade to the bottom of the sign. The anchor sleeve conforms to ASTM A500 and the soil 

plate is fabricated from steel that conforms to ASTM A36. The signpost steel conforms to ASTM A653. 

CRASH TESTING 

By signature below, the Engineer affiliated with the testing laboratory, agrees in support of this submission that 

all of the critical and relevant crash tests for this device listed above were conducted to meet the MASH test 

criteria. The Engineer has determined that no other crash tests are necessary to determine the device meets 

the MASH criteria. 

Engineer Name: Antonio Reyes 

Digitally signed by Antonio Reyes Engineer Signature: Antonio Reyes Date: 2022.01.28 14:40:01 -08'00' 

Address: 9270 Holly Road, Adelanto, CA 92301 Same as Submitter 

Country: USA Same as Submitter

 A brief description of each crash test and its result: 
 Version 10.0 (05/16) 

Page 3 of 5 

Required Test 

Number 

Narrative 

Description 

Evaluation 

Results 

3-60 (1100C) 

Applus IDIADA KARCO Test No. P41196-01. 

Test Date July 19, 2021. Crash Test Report 

No. TR-P41196-01-NC for MASH 2016 Test 

3-60 Crash Test of Trinity Highway Products 

S-Q 8 Slip Base, Perforated, 3-Post Sign 

Support, TL-3. 

The S-Q 8 Slip Base, Perforated, 3-Post Sign 

Support system (P41196-01) was impacted 

by a 2016 Kia Rio 4-door sedan at a velocity 

of 18.67 mph (30.05 km/h) and a CIA of 0°. 

Upon impact, the support structure yielded 

and made contact with the vehicle then fell 

to the ground. There was no significant 

deformation or penetration into the 

vehicle's occupant compartment. The 

vehicle experienced a maximum occupant 

impact velocity (OIV) of 15.7 ft/s (4.8 m/s) 

and a maximum ridedown acceleration (RA) 

of 2.0 g. 

The Trinity Highway Products S-Q 8 Slip 

Base, Perforated, 3-Post Sign Support, TL-3 

Support Structure met all the requirements 

for MASH 2016 Test 3-60. 

PASS 

3-61 (1100C) 

Applus IDIADA KARCO Test No. P41197-01. 

Test Date July 19, 2021. Crash Test Report 

No. TR-P41197-01-NC for MASH 2016 Test 

3-61 Crash Test of Trinity Highway Products 

S-Q 8 Slip Base, Perforated, 3-Post Sign 

Support, TL-3. 

The S-Q 8 Slip Base, Perforated, 3-Post Sign 

Support system (P41197-01) was impacted 

by a 2015 Kia Rio 4-door sedan at a velocity 

of 63.82 mph (102.71 km/h) and a CIA of 0°. 

Upon impact, the support structure yielded 

and did not make contact with the vehicle 

thereafter. There was no significant 

deformation or penetration into the 

vehicle's occupant compartment. The 

vehicle did not experience a measurable 

occupant impact velocity (OIV) or ridedown 

acceleration. 

The Trinity Highway Products S-Q 8 Slip 

Base, Perforated, 3-Post Sign Support, TL-3 

Support Structure met all the requirements 

for MASH 2016 Test 3-61. 

PASS 
 Version 10.0 (05/16) 

Page 4 of 5 

Required Test 

Number 

Narrative 

Description 

Evaluation 

Results 

3-62 (2270P) 

Applus IDIADA KARCO Test No. P41198-01. 

Test Date August 24, 2021. Crash Test 

Report No. TR-P41198-01-NC for MASH 2016 

Test 3-62 Crash Test of Trinity Highway 

Products S-Q 8 Slip Base, Perforated, 3-Post 

Sign Support, TL-3. 

The S-Q 8 Slip Base, Perforated, 3-Post Sign 

Support system (P41198-01) was impacted 

by a 2015 Ram 1500 4-door passenger truck 

at a velocity of 61.07 mph (98.29 km/h) and 

a CIA of 0°. Upon impact, the support 

structure yielded and made contact with 

the vehicle then fell down. There was no 

significant deformation or penetration into 

the vehicle's occupant compartment. The 

vehicle did not experience a measurable 

occupant impact velocity (OIV) or ridedown 

acceleration. 

The Trinity Highway Products S-Q 8 Slip 

Base, Perforated, 3-Post Sign Support, TL-3 

Support Structure met all the requirements 

for MASH 2016 Test 3-62. 

PASS 

Full Scale Crash Testing was done in compliance with MASH by the following accredited crash test 

laboratory (cite the laboratory’s accreditation status as noted in the crash test reports.): 

Laboratory Name: KARCO Engineering, INC 

Laboratory Signature: Digitally signed by Antonio Reyes Antonio Reyes Date: 2022.01.28 14:39:16 -08'00' 

Address: 9270 Holly Road, Adelanto, CA 92301 Same as Submitter 

Country: USA Same as Submitter 

Accreditation Certificate 

Number and Dates of current 

Accreditation period : 

International Accreditation Services (IAS) 

ISO 17025 Accreditation Certificate #TL-371 

Expires July 1, 2022 

Bret Eckert -08'00'

Digitally signed by Bret Eckert

Submitter Signature*: Date: 2022.02.11 08:05:07 

ATTACHMENTS 
 Version 10.0 (05/16) 

Page 5 of 5 

Attach to this form: 

1) Additional disclosures of related financial interest as indicated above. 

2) A copy of the full test report, video, and a Test Data Summary Sheet for each test conducted in 

support of this request. 

3) A drawing or drawings of the device(s) that conform to the Task Force-13 Drawing Specifications 

[Hardware Guide Drawing Standards]. For proprietary products, a single isometric line drawing is 

usually acceptable to illustrate the product, with detailed specifications, intended use, and contact 

information provided on the reverse. Additional drawings (not in TF-13 format) showing details that 

are relevant to understanding the dimensions and performance of the device should also be submitted 

to facilitate our review. 

FHWA Official Business Only: 

Eligibility Letter 

Number Date Key Words 
 

 

 

 

MASH 2016 Test 3-60 Summary

 

GENERAL INFORMATION Impact Conditions Occupant Risk 

Test Agency..................... Applus IDIADA KARCO Impact Velocity .................. 18.67 mph (30.05 km/h) Longitudinal OIV.............................. 15.7 ft/s (4.8 m/s)

Test Number..................... P41196-01 Impact Angle..................... 0.0° Lateral OIV.................................... -0.3 ft/s (-0.1 m/s)

Test Designation............... 3-60 Kinetic Energy.................. 28.7 kip-feet (38.9 Kilojoules) Longitudinal RA........................... -2.0 g

Test Date......................... 7/19/21 Maximum KE Required....... 34.0 kip-feet (46.0 Kilojoules)* Lateral RA................................. 0.9 g

Location / Orientation......... 2.8 in. (71 mm) From the THIV............................................. 15.7 ft/s (4.8 m/s)

TEST ARTICLE Vehicle Centerline on the Driver PHD......................................... 2.0 g

Name / Model.....................S-Q 8 Slip Base, Perforated, Side ASI.............................................. 0.44

3-Post Sign Support, TL-3 Exit Conditions 

Type................................. Support Structure Exit Velocity.................... 16.05 mph (25.83 km/h) Test Article Deflections 

Mounting Height ............... 88.5 in. (2.25 m) Final Resting Position......... 10.4 ft. (3.2 m ) Downstream Debris Field (longitudinal)..................... 24.6 ft. (7.5 m)

Key Elements..................... 3.00" Anchor Sleve w/ Plate 0.6 ft. (0.2 m) Left Debris Field (lateral)............................. 0.6 ft. (0.2 m)

S-Q 8 Slip Base Vehicle Stability ............... Satisfactory Vehicle Damage 

2.50" 12GA Signposts Maximum Roll Angle............ 0.8 ° Vehicle Damage Scale................... 12-FD-1

96X72, Aluminum Sign Maximum Pitch Angle......... -4.2 ° CDC............................................. 12FDEW1

Road Surface.....................Smooth, clean concrete Maximum Yaw Angle......... -3.5 ° Maximum Deformation..................... None

TEST VEHICLE *MASH 2016 Table 2-5 has a recognized unit conversion discrepancy in the 

Type / Designation............... 1100C "Acceptable KE" (impact severity) maximum value for test 3-60. The value in 

the table is 41.0 kJ, however 34.0 kip-ft converts to 46.0 kJ. 

Year, Make, and Model......... 2016 Kia Rio

Curb Mass........................ 2,559.5 lbs (1,161.0 kg)

Test Inertial Mass............... 2,462.5 lbs (1,117.0 kg)

Gross Static Mass............... 2,620.1 lbs (1,188.5 kg)

Figure 2 MASH 2016 Test 3-60 Summary 

13 TR-P41196-01-C
 

 

 

MASH 2016 Test 3-61 Summary

 

GENERAL INFORMATION Impact Conditions Occupant Risk 

Test Agency..................... Applus IDIADA KARCO Impact Velocity ..................63.82 mph (102.71 km/h) Longitudinal OIV..............................3.4 ft/s (1.0 m/s) 

Test Number..................... P41197-01 Impact Angle.....................0.0° Lateral OIV.................................... 0.03 ft/s (0.0 m/s) 

Test Designation............... 3-61 Kinetic Energy.................. 331.8 kip-feet (449.9 Kilojoules) Longitudinal RA........................... 0.0 g 

Test Date......................... 7/19/21 Minimum KE Required....... 288.0 kip-feet (390.0 Kilojoules) Lateral RA................................. 0.0 g 

Location / Orientation......... 2.0 in.(50 mm) From the Vehicle THIV............................................. Not Applicable 

TEST ARTICLE Centerline on the Driver Side PHD......................................... Not Applicable 

Name / Model.....................S-Q 8 Slip Base, Perforated, ASI.............................................. 0.22 

3-Post Sign Support, TL-3 Exit Conditions 

Type.................................Support Structure Exit Velocity.................... 61.31 mph (98.67 km/h) Test Article Deflections 

Mounting Height ............... 88.5 in. (2.3 m) Final Resting Position......... 269.2 ft. (82.1 m) Downstream Debris Field (longitudinal)..................... 41.6 ft. (12.7 m) 

Key Elements.....................3.00" Anchor Sleeve w/ Plate 6.8 ft. (2.1 m) Right Debris Field (lateral)............................. 12.1 ft. (3.7 m) 

S-Q 8 Slip Base Vehicle Stability ............... Satisfactory Vehicle Damage 

2.50" 12GA Signposts Maximum Roll Angle............ 2.6 ° Vehicle Damage Scale................... 12-FD-1 

96X72, Aluminum Sign Maximum Pitch Angle......... -0.2 ° CDC............................................. 12FDEW1 

Road Surface.....................Smooth, clean concrete Maximum Yaw Angle......... 1.4 ° Maximum Deformation..................... None

TEST VEHICLE 

Type / Designation............ 1100C 

Year, Make, and Model......... 2015 Kia Rio 

Curb Mass........................ 2,561.7 lbs (1,162.0 kg) 

Test Inertial Mass............... 2,437.2 lbs (1,105.5 kg) 

Gross Static Mass............... 2,620.1 lbs (1,188.5 kg) 

Figure 2 MASH 2016 Test 3-61 Summary 

13 TR-P41197-01-C
 

 

 

 

MASH 2016 Test 3-62 Summary

 

GENERAL INFORMATION Impact Conditions Occupant Risk 

Test Agency..................... Applus IDIADA KARCO Impact Velocity .................. 61.07 mph (98.29 km/h) Longitudinal OIV..............................1.4 ft/s (0.4 m/s) 

Test Number..................... P41198-01 Impact Angle.....................0.0° Lateral OIV.................................... -0.6 ft/s (-0.2 m/s)

Test Designation............... 3-62 Kinetic Energy.................. 625.5 kip-feet (848.1 Kilojoules) Longitudinal RA........................... 0.0 g 

Test Date......................... 8/24/21 Minimum KE Required....... 594.0 kip-feet (805.3 Kilojoules) Lateral RA................................. 0.0 g 

Location / Orientation......... 3.5 in.(90 mm) From Vehicle THIV.............................................Not Applicable 

TEST ARTICLE Centerline on the Driver Side PHD......................................... Not Applicable 

Name / Model.....................S-Q 8 Slip Base, Perforated, Exit Conditions ASI.............................................. 0.25 

3-Post Sign Support, TL-3 Exit Velocity.................... 59.64 mph (95.98 km/h)

Type................................. Support Structure Final Resting Position.........252.5 ft. (77.0 m) Downstream Test Article Deflections 

Mounting Height ............... 88.5 in. (2.3 m) 3.5 ft. (1.1 m) Right Debris Field (longitudinal)..................... 73.8 ft. (22.5 m)

Key Elements..................... 3.00" Anchor Sleeve w/ Plate Vehicle Stability ............... Satisfactory Debris Field (lateral)............................. 17.9 ft. (5.4 m)

S-Q 8 Slip Base Maximum Roll Angle............1.6 ° Vehicle Damage 

96X72, Aluminum Sign Maximum Pitch Angle.........3.2 ° Vehicle Damage Scale................... 12-FD-1

2.50" 12GA Signposts Maximum Yaw Angle......... 1.4 ° CDC............................................. 12FDEW1

Road Surface..................... Smooth, clean concrete Maximum Deformation..................... None

TEST VEHICLE 

Type / Designation............... 2270P

Year, Make, and Model......... 2015 RAM 1500

Curb Mass........................ 5,146.6 lbs (2,334.5 kg)

Test Inertial Mass............... 5,016.5 lbs (2,275.5 kg)

Gross Static Mass............... 5,016.5 lbs (2,275.5 kg)

Figure 2 MASH 2016 Test 3-62 Summary 

13 TR-P41198-01-C
FRONT SIDE BACK 

2022 

S-Q 8 SLIP BASE SIGN SUPPORT SYSTEM - 3-POST 

SSSXXa 

SHEET NO. DATE 

1 of 4 1/28/2022 

FM0038 Rev D, 9/25/14 
INTENDED USE 

The S-Q 8 perforated steel tubular sign support system is a three (3) post sign support slip base 

system. The system utilizes drivable anchor sleeves with a soil bearing plate in standard soil. The 

sign support system was successfully crash tested to TL-3 in accordance with MASH 2016 

guidelines. This system meets the requirements of the AASHTO LRFD Specifications for 

Structural Supports for Highway Signs, Luminaires, and Traffic Signals, 1st Edition. 

FEATURES 

The S-Q 8 perforated steel tubular sign support system consists of three (3) 2.50 inch 12 GA square

perforated steel signposts and three (3) 3.00 inch 7 GA square steel anchor sleeves with soil bearing

plate (sheet 3 of 4). The slip base system consists of a slip base stub, bolt keeper plate and slip base 

casting. The slip base stub is secured to the anchor sleeve with two (2) Ø3/8" shoulder bolts and the 

slip base casting is secured to the slip base stub with three (3) Ø1/2" bolts and nuts. The signposts 

slide into the slip base castings and are secured in place by two (2) Ø3/8" shoulder bolts and nuts. 

The material for the anchor sleeves conforms to ASTM A500 and the soil plate steel conforms to 

ASTM A36. The pre-coated steel material for the perforated signposts conforms to ASTM A653. 

The exterior surface of the signposts is coated with minimum 0.5 mils clear acrylic polymer. 

ELIGIBILITY 

The S-Q 8 3-Post perforated steel slip base sign support system has been tested to MASH 2016 Test

Level 3 and is eligible for Federal reimbursement by FHWA. 

FHWA Eligibility Letter(s): SS-XXX dated ____________ for MASH 2016 Test Level 3. 

REFERENCES 

Manual for Assessing Safety Hardware (MASH), American Association of State Highway and 

Transportation Officials (AASHTO), 2016. 

CONTACT INFORMATION

 15601 Dallas Parkway, Suite 525

Addison, TX 75001 

Telephone: (888) 323-6374

https://trinityhighway.com 

S-Q 8 SLIP BASE SIGN SUPPORT SYSTEM - 3-POST 

SSSXXa 

SHEET NO. DATE 

2 of 4 1/28/2022 

FM0038 Rev D, 9/25/14 
 

SIGNPOST/ANCHOR SLIP BASE CONNECTION 

S-Q 8 SLIP BASE SIGN SUPPORT SYSTEM - 3-POST 

SSSXXa 

SHEET NO. DATE 

3 of 4 1/28/2022 

FM0038 Rev D, 9/25/14 
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S-Q 8 SLIP BASE SIGN SUPPORT SYSTEM - 3-POST 

SSSXXa 

SHEET NO. DATE 

4 of 4 1/28/2022 

FM0038 Rev D, 9/25/14