U.S. Deportment 

of Transportation 

Federal Highway 

Administration 

1200 New Jersey Ave., SE 

Washington, O.C. 20590 

March 27, 2014 In Reply Refer To: 

HSST/B-230A 

Ms. Karla Lechtenberg 

Midwest Roadside Safety Facility (MwRSF) 

130 Whittier Research Center 

2200 Vine Street 

Lincoln, NE 68583 - ,'' . ,~ ..;, . .... 

Dear Ms. Lechtenberg: 

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

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

program. 

Name of system: 31-inch Midwest Guardrail System (MOS) with 

Southern Yellow Pine Posts 

Type of system: Longitudinal Barrier 

Test Level: AASHTO MASH TL3 

Testing conducted by: Midwest Roadside Safety Facility (MwRSF) 

Task Force 13 Designator: SGR20a-c 

Date of request: December 18, 20 13 

Decision: 

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

integral part of this letter: 

• 31-inch Midwest Guardrail System (MOS) with Southern Yellow Pine Posts 

Based on a review of crash test results you submitted 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 pmpose or use. 

The FHWA, the Department ofTransportation, 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. 
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. 


Summary and Standard Provisions 


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


and may be installed under the range of conditions tested. Please note the following standard 


provisions that apply to FHW A eligibility letters: 


• 	 This letter provides a AASHTO/ARTBA/AGC Task Force 13 designator that should 

be used for the purpose ofthe creation of a new and/or the update of existing Task 

Force 13 drawing for posting on the on-line 'Guide to Standardized Highway Barrier 

Hardware' currently referenced in AASHTO Roadside Design Guide. 

• 	 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 FHW A 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 criteria ofthe MASH. 

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

number B-230A 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 FHW A 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. 

Sincerely yours, 

~11hL{ ;, ~ 

Michael S. Griffith 

Director, Office of Safety Technologies 

Office ofSafety 

Enclosures 
Version 7.0 (3/13) 

Page 1 of 3 

Request for Federal Aid Reimbursement Eligibility 

OfHighway Safety Hardware 

Date of Request: December18,2013 l-New 

Name: Karla Lechtenberg Signature: .+Q.Ja 

r Resubmission 

"-P•, .e- J ,, . l<W' J..~ i-­

... Company: Midwest Roadside Safety Facility (MwRSF) ~ Address: E 130 Whittier Research Center, 2200 Vine Street, Lincoln, NE 68S83-0853

.a

:s Country: II) USA 


Michael S. Griffith, Director 
 To: FHWA, Office of Safety Technologies 

u

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

highway program. 

System Type Submission Type Device Name I Variant Testing Criterion Test 

Level 

'B': Barriers (Roadside, 

Median, Bridge Ralllngs) 

Ci' Physical Crash Testing 

(' FEA &V&V Analysis 

Midwest Guardrail System 

(MGS) with Southern 

Yellow Pine Posts 

AASHTOMASH 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. 

Identification of the Individual or organization responsible for the product: 

Contact Name: Karla Lechtenberg Same as Submitter 181 

Company Name: Midwest Roadside Safety Facility (MwRSF) Same as Submitter 181 . 

Address: 130 Whittler Research Center, 2200 Vine Street Lincoln, NE 68583­ Same as Submitter ~ 

Country: USA Same as Submitter ~ 

PRODUCT DESCRIPTION 


Modification to Existing Hardware Non-Significant- Effect Is positive or Inconsequential 

The Midwest Guardrail System (MGS) with Southern Yellow Pine (SYP} wood posts (SGR20a-c) consists of 

standard 12-gauge W-beam sections (RWM04a) Installed with the top of the rail set at a nominal height of 31 

inches. The rail ls mounted on standard 6-ln. x 8-ln. SYP wood posts that are 6-ft long {PDE02) and set at 75-ln. 

centers. The posts are embedded 40 Inches In the ground. A6-ln. x 8-ln. x 12-ln. wood blockout (PDB11 a-b) Is 

used to block the rail away from the front face of the SYP wood post The rail splices are located at mid-spans 

between adjacent posts. Standard guardrail bolts or ASTM A307 5/8-ln. diameter x 21-ln. long guardrail bolts 

and nuts (FBB07} are used to attach the rail to the posts. 

CRASH TESTING 

A brief description of each crash test and its result: 
Version 7.0 (3/13) 

Page 1 of 3 

Request for Federal Aid Reimbursement Eligibility 

OfHighway Safety Hardware 

... 

~ 

e 

.Cl 

:I 

11'1 

Date of Request: December 18, 2013 (i' New r Resubmission 

Name: Karla Lechtenberg Signature:

Company: Midwest Roadside Safety Facility (MwRSF) 

Address: 130 Whittier Research Center, 2200 Vine Street, Lincoln, NE 68583-0853 

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. 

System Type Submission Type Device Name I Variant Testing Criterion Test

Level 

'B': Barriers (Roadside, 

Median, Bridge Railings) 

(i' Physical Crash Testing

r FEA&V&VAnalysis 

Midwest Guardrail System 

(MGS) with Southern

Yellow Pine Posts 

AASHTOMASH 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. 

Identification of the individual or organization responsible for the product: 

Contact Name: Karla Lechtenberg Same as Submitter [8J 

Company Name: Midwest Roadside Safety Facility (MwRSF) Same as Submitter [8J 

Address: 130 Whittier Research Center, 2200 Vine Street, Lincoln, NE 68583­ Same as Submitter [8J 

Country: USA Same as Submitter [8J 

PRODUCT DESCRIPTION 


Modification to Existing Hardware Non-Significant- Effect is positive or Inconsequential 

The Midwest Guardrail System (MGS) with Southern Yellow Pine (SYP) wood posts (SGR20a-c) consists of 

standard 12-gauge W-beam sections (RWM04a) installed with the top of the rail set at a nominal height of 31 

inches. The rail is mounted on standard 6-in. x 8-in. SYP wood posts that are 6-ft long (PDE02) and set at 75-in. 

centers. The posts are embedded 40 inches in the ground. A 6-in. x 8-in. x 12-in. wood blockout (PDB11 a-b) is 

used to block the rail away from the front face ofthe SYP wood post. The rail splices are located at mid-spans 

between adjacent posts. Standard guardrail bolts or ASTM A307 5/8-in. diameter x 21-in. long guardrail bolts 

and nuts (FBB07) are used to attach the rail to the posts. 

CRASH TESTING 

A brief description of each crash test and its result: 
Version 7.0 (3/13) 

Page 2 of 3 

Required Test 

Number 

Narrative 

Description Evaluation Results 

3-10 (1100() 

The results of test no. MGSSYP-2 conducted on September 13, 

2011 are found in MwRSF report no. TRP-03-272-13. A 2,612-lb 

small car with a simulated occupant seated in the right-front seat, 

impacted the MGS with SYP posts, with its rail height set to the 

maximum tolerance of 32 inches, at a speed of 61.5 mph and at an 

angle of 25.3 degrees. After impact, the vehicle began to redirect, 

including a counter-clockwise yaw rotation. At 0.260 sec after 

impact, the vehicle became parallel to the guardrail with a speed of 

41.2 mph. At 0.484 sec, the vehicle exited the guardrail at an angle 

of 13.6 degrees and at a speed of 35.7 mph. The vehicle was 

smoothly redirected. 

Exterior vehicle damage was moderate, and the interior occupant 

compartment deformations were minimal, with a maximum 

deformation of 11A in. (32 mm), consequently not violating the 

limits established in MASH. Damage to the barrier was moderate, 

consisting mostly of deformed W-beam rail and fractured wood 

guardrail posts as well as contact marks on guardrail and posts. The 

maximum lateral dynamic rail deflection was 22.2 inches. The 

working width of the system was 39.7 inches. All occupant risk 

measures were well below recommended values, and the test 

vehicle showed no tendency to roll over. 

PASS 

3-11 (2270P) 

The results of test no. MGSSYP-1 conducted on August 3, 2011 are 

found in MwRSF report no. TRP-03-272-13. A 5, 199-lb pickup truck 

with a simulated occupant seated in the right-front seat, impacted 

the MGS with SYP posts, with its rail height set to the nominal 

height of 31 inches, at a speed of 62.2 mph and at an angle of 24.9 

degrees. At 0.290 sec after impact, the vehicle became parallel to 

the guardrail with a speed of 46.8 mph. At 0.652 sec, the vehicle 

exited the guardrail at an angle of 15.7 degrees and at a speed of 

37.8 mph. The vehicle was smoothly redirected even though the 

right -front tire snagged on a post and was disengaged from the 

vehicle. 

Exterior vehicle damage was minimal, and the interior occupant 

compartment deformations were minimal, with a maximum of 1in., 

consequently not violating the limits established in MASH. Damage 

to the barrier was also moderate, consisting mostly of deformed Wbeam and fractured guardrail posts as well as contact marks on 

guardrail. The maximum lateral dynamic rail deflection was 40.0 

inches. The working width of the system was 53.8 inches. All 

occupant risk measures were well below recommended values, and 

the test vehicle showed no tendency to roll over. 

PASS 

3-20(11000 Not applicable WAIVER REQUESTED 

3-21 (2270P) Not applicable WAIVER REQUESTED 

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.): 
Version 7.0 (3/13) 

Page 3 of 3 

Laboratory Name: Midwest Roadside Safety Facility 

Laboratory Contact: Karla Lechtenberg Same as Submitter l:8:J 

Address: 130 Whittier Research Center, 2200 Vine Street, Lincoln, 

NE 68583-0853 Same as Submitter l:8:J 

Country: USA Same as Submitter l:8:J 

Accreditation Certificate 

Number and Date: 

A2LA Certificate Number: 2937.01 , Valid to December 31, 2013 

ATTACHMENTS 

Attach to this form: 

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

support of this request. 

2) 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 detai led specifications, intended use, and contact 

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

are key to understanding the performance of the device should also be submitted to facilitate our 

review. 

FHWA Official Business Only: 

Eligibility letter AASHTO TF13 

Number Date Designator Key Words 

B230A March 14, 2014 SGR20a-c 

31-inch MGS, Southern Yellow Pine (SYP) wood 

posts. 
0.000 sec 

r 

0.096 _sec ... 0.290 sec 

W•t<r" 1J.J•I 

TeltAgcncy 

Test Nlllllbcr 

Date 

MASH Tell Dcsignalion No 

Tell Article. 

Totsl Length 

M"RSF 

MGSSYP·l 

.813/Wll 

J.11 

MGS \<illl SVP Posts 

18111-3 in. (SS 2 m) 

Key Component-Steel W·Be.tm Guardrail 

Thickness .. 12 gauge (2.66 mm) 

Top Mounting Height... JI m (787mm) 

Key Componen1 - Sculhem Yellow Pone Posts 

Dimmston... 6" 8" 72 m (152 >t 201x1.829 mm) 

Pos1 Spocing.. 7S 1n (l,90S mm) 

Emb<dmento.¢i 40in (l,016mm) 

Key Componau- Wood Bloclcu1 

Post Nos. J-27. 

Vduclc Maltc 1'!1.fodd 

Cwto 

Testlncmal 

Gross Siatic 

Impact Conditions 

Speed 

Anglo (Tnjoctoiy) 

Impact Loc:otion . 

Impact Severity. 

Exit Conditions 

Speed 

Anglo (Tr.tjoctoiy) .. 

Anglo (Orientation). 

Exit Bo• Criterion ... 

Vehicle Stability 

Vehicle Slopping Disunco 

6 x lh 14'·' 1n (IS2 x 30Sx 362 mm) 

200! Dodge Ram I SOO Quad Cab 

S,130 lb (2.J27kg) 

S,029 lb (2.281 kg) 

S,199 lb (2.358 kg) 

622mph(I002km;b) 


.... 249deg 


12fl-61n (38m)UpsuwnoCPostNo.15 


llS Sk1p-fl(IS66kJ)> 106kip-fl(l44U) 


37 8 mph (60.8 knvb) 

IS 7deg 

16.1 deg 

..l'llss 

Sah1&ctory 

2091\ (63 7 m) downstre.tm 

S61\-10in (17.3)1alcn11ybehind 

V duclo D1m1go 

vos1'" coc«"' 

Maximum lnteoor Deformation 

Tosi An1clo Dam•g• 

?t.ta1umum Test Art&clc DcOcctions 

Permoncnl Sot 

Dynanuc: 

WorkmgW1dlll 

Mlmmum Angular Dosplacancnts 

Roll 

Puch 

\"aw 

Tmuduccr Data 

E\"Uluataon Cntcna Transducer MASH 

EDR-J DTS Limit

OIV 

!Vs 

fmlsl 

Long11ud1nal -1420(-133) .13 2S (-1041 ~40(122) 

........1 -1477(-150) -1474(-ISO) ~40(122) 

ORA 

s's 

Long11ud1nal 839 

-7S6 ·814 ~2049 

Lo1onl -765 ·8 SI <2049 

llllV fV1 (ml•) NA 19 82 (604) not 

fMUirod 

PllD-g's NA 11 )6 not 

required 

ASI 070 070 not 

reauired 

figure 32. Summary ofTest Results and Sequential Photographs, Test No. MGSSYP-1 

! .~. ;

i.__ _... 

Minimal 

Ol·RFQ-1 

Ol·RYEW-3 

I 1n (2Smm) 

Moderate 

JOY, tn (768 mm) 

400 on (1,016 mm) 

SJ 8 on (1.)67 mm) 

s6° < 75° 

44° < 75° 

-14 1° 

­
. SattSfactory 

0.000 sec 0.128 sec 0.268 sec 

,________,ee·-:r (~,_,, ...11-------4--1 

Figure 49. Summary ofTest Results and Sequential Photographs, Test No. MGSSYP-2 

tr-,,· (~~ ...] 

i

,. 

"'

..., 

' 2 

M,.RSF \'eh1de Stopping Dnunce 

MGSSYP·2 

Date 9/1312011 \'clucl~~~~pc MASH Test Designation No 3-10 

Test Arucle... MGS with SYP Posts enc'"' 

Tocal Length .......................... 181 ft-3 an (SS 3 m) Ma'umum lntenor DcformatEon 

Key Ccmponcnt- Stoel W·BQm Guardtatl Tcsl An1clc Damage 

Thickness .. 12 gouge (2.66 mm) MaX1mum Test Anicte Deflections 

Tep Mcunring lleight ..... l2 in. (813 mm) Pamanenl Set 

Key Ccmponent- Southern Yellow Pinc Posts Dyn:amic 

Dimension.. 
 6 • 8 • 72 in. Working Width (IS2 • 203 • 1,829 mm) 


Post Spocing... 
 7S in (l.90S mm) 
 Pli.tax..mum Angular Displacements 

Embcdmcnt Depth 
 39 in (991 mm) 
 Roll 

Key Component Pt1ch - WllOd Block°"' Post Nos l·27... 6 • 12' 14'/•tn (IS2 • 30Sx 362 mm) Yaw 

Vehicl<> Make 1'olodel 2004KiaRto Transdu~ Data 

Cwb 2,402 lb ( 1.090 kg) E'-aluabon Cntcna Test Inertial 2,442 lb(l,108 kg) EDR·l 

Gross Static ... 2,612 lb(l,IBS kg) 01\' Longt1ud1nal -17 13 (-S 22) Impact Conditions flis Spcod 61 Smph(989knvb) (m1

s) Angle (TtaJ<Clllry) Lateral 2S 3 deg -19S2{-S 9S) 

Angle (Orientation) 249dcg Longt1ud1nal Impact Loc:.tion Bft-4in (2.Sm)UpstrwnofPostNo IS ORA -UOS 

Impact Soverity (IS) ... S64 ktp·ft (76 4 U) >SI ktp·ft(697U) g's Lateral -742 

E"t Cond11icns 

Spcod TillV - fVs (m's) NA 

Angle (Tr.1jectory) ... 

Angle (Orientation). PllD-g's NA 

E•it Bo• Criterion ... 

Vehicle Stability .. ASI 091 

l,J: : 

! l 

.... 161l'ft-'-21n (SI 3 m)downsUQm 

171\-ll tn (S Sm) latually1nfr= 

Moderate 

01-RFQ-6 

Ol 0 RYEW0 S 

H<tn (318mm) 

Moderate 

lb\'. an (41J mm) 

22 2 1n (S64 mm) 

39 71n (1,008 mm) 

-101•<1s• 

·6 7° < 7S0 

·32-9° 

TtartS<lu= - !l.lASll

DTS Um1t

:540 ·IS72H 79) (Ill) 

:540 -209) (-6 JS) 112 21 

-13 o.t :52049 

.9 30 :5Z049 

not 2792(8 SI) required 

not 14 )8 rcauircd 

not 099 reaulrcd 
PDB10 GALVANIZED 

IDWEST GUARDRAIL SYSTEM WITH STANDARD POST SPACING 

SGR20a-c 

SHEET NO. DATE: 

I of4 s11no 11 

8-FSBO l 

SPLICE BOLTS

'\ ~ 

I 


I 


I 


I 


I 


I 


I 


I 75"[ 1905) I


I 


I 

I 


I 
 \_RWM04o 

,, 

I 


I 


I 


I 


I 


I 


I 


I 


I 


I I 


I 

w 

I 


A.J ELEVATION 


160 NAIL, 
 GALVANIZED 


160 NAIL. PDBi 1 


8-FBBOl 8 - FBBOl 

31 "[ 87] 3 1 " [ 
 87 ] 


24 
 24 
 FOR b 

PWE06 OR PDExx FOR c 

40 " [ 1016 ] 

SGR20a 

SECTION A-A 

-~ FBB06 

I 


I 


I 


I 


! I 


FWC16o 

7/ "[632 ) PDE02 

40" [ 1016) 

-'---- ------ L ___...J 

SGR20b-c 
INTENDED USE 


Midwest Guardrail System (MGS) with standard post spacing should be used in locations where a maximum 

dynamic deflection of 43 1/ 16" [I 094] or less is acceptable and where a working width of 49" [ 1245) is provided. 

MGS should be anchored and terminated using a suitable guardrail end treatment that is approved with a 31" r787) 

top mounting height. MGS can be used with wide-flange steel posts (PWE06) or timber posts (PDE02). Guardrail 

sections measuring 300" r7620) long can be used in lieu of the 150" f38 IOl long sections. This system is TL-3 

NCH RP 350 accepted ana acceptabfe according to the update to NCIIRP 350. 

COMPONENTS 


Unit Length = 150" [3810] 


DESIGNATOR COMPONE~T SY TE~ t NU~ IBER 

FBBOI Guardrail splice bolts and nuts a-c 8 

FBB06 Guardrail post bolts and nuts a 2 

FBB07 Guardrail post bolts and nuts b-c 2 

FWCl6a Round washer b-c 2 

PDB IO MGS timber blockout a 2 

PDB ll MGS timber blockout b-c 2 

PDE02 Timber guardrail post b 2 

PWE06 Wide-flange guardrail post a 2 

RWM04a W-beam Rail a-c I 

----- 160 nail , galvanized a-c 2 

PDExx White Pine guardrail post c 2 

ACCEPTANCE 

FH\VA Acceptance Lener B-133, March I, 2005. FH WA Acceptance Lener B-212, June, 20 I I. 

REFERENCES 

Polivka, K.A., Faller, R.K., Sicking, D.L., Reid, J.O., Rohde, J.R., Holloway, J.C., Bielenberlk, R.W., and Kuipers,

B.0., Development ofthe Midwest Guardrail System (MGS) for Standard and Reduced Post ;)pacing and i11 

Combinalion wilh Curbs, Final Report to the Midwest State's Regional Pooled Fund Program, Transportation Research Report No. TRP-03-1 39-04, Project No. SPR-3(017)-Years 10, and 12- 13, Project Code: RPFP-00-0 2, 02­

0 I, and 03-05, Midwest Roadside Safety ac ilit , University of Nebraska-Lincoln, September I, 2004. 

Faller, R.K., Polivka, K.A., Kuipers, B.O., Bielenberg, B.W., Reid , J.O .. Rohde, J.R., and Sicking, O.L., i\lidwesl 

Guardrail System/or Standard and Special Applications, Paper No. 04-4778, Transportation Research Record No. 

1890, Transportation Research Board. ational Research Council Washington, D.C., January 2004, pp. 19-33. 

Sicking, D.L., Reid, J.O. and Rohde, J.R., Del'elopme/11 ofthe Guardrail System, Transportation Research Record 

No. 1797, Transponation Research Board, National Research Council, Washington, D.C., ovember 2002. pp. 44­

52. 

Polivka, K.A.• Faller, R.K., Sicking, D.L., Rohde, J.R., Bielenberg, R.W., and Reid, J.D., Pe1for111ance /:.."valuation 

of the Midwest Guardrail Sys1e111 - Update lo NCI/RP 350 Test No. 3-11 (22 l.J1\IG-I) , Final Repon to the National 

Cooperative Highwax Research Program (NCHRP), MwRSF Research Report No. TRP-03-170-06, Midwest 

Roadside Safety Facility, Lincoln, Nebraska, October I 0, 2006. 

Stolle, C.J., Lechtenberg, K.A., Faller, R.K., Rosenbaugh, S.K., Sicking, D.L., and Reid, J.D., Eva/11alio11 of1he Midwest Guardrail System (MGS) wilh 1Vhi1e Pine Wood Posts, Final Rcpo11 to Wisconsin Department of 

Transportation, MwRSF Research Report No. TRP-03-241-11 , Project No. TPF-5(193) Supplement #12, Midwest 

Roadside Safety Facility. University of Nebraska-Lincoln, March 28, 2011 . 

MIDWEST GUARDRAIL SYSTEM WITH STANDARD POST SPACING 

SGR20a-c 

SllEETNO. DATE: 

2 of.t 8/1/2011 

; 
REFERENCES 

Polivka, K. A., Faller, R.K., Sicking, D.L., Rohde, J.R., l ~· R. W., and Reid, J.D., Pe1formance Evaluation ofthe Midwest Guardrail System ­ Update to NCH RP 350 Test No. 3-1 I With 28" CG Height (22 1./MG-2), Final 

Rerort to the National Cooperati ve 1-lis.hway Research Program (NCH RP), MwRSr Research Report No. TRP-03­ 17 -06, Midwest Roadside Safety Facil ity, Lincoln, Nebraska, October 11, 2006. 

Poli vka, K.A., Faller, R.K., Sicking, D.L., Rohde, J.R., Bielenberg, R. \V., and Reid, J.D., Pe1formance Eval11t1tio11 

ofrhe Midwesr Guardrail System - Updare to NCH RP 350 Test No. 3-10 (22 J-/,\/G-3), Final Report to the National 

Cooperative Highwax Research Program (NCHRP), MwRSF Research Report No. TRP-03-1 72-06, Midwest 

Roadside Safety Facility, Lincoln, Ne braska, October 11 , 2006. 

CONTACT TNFO RMATION 

Midwest Roadside Safety Facil ity 

Nebraska Transportation Center 

University of Nebraska-Li ncoln 

2200 Vine Street 

130 Whittier Resea rch Center 

Lincoln, NE 68583-0965 

(4 02) 472-0965 

Email: mwrsf@unl. edu 

Website: http://mwrsf. unl.edu/ 

MIDWEST GUARDRAIL SYSTEM WITH STANDARD POST SPACING 

·m0'-'P1 SGR20a-c 

SHEET NO. DATE: 

3 of 4 8/ 1/20 11 
TH IS PAGE INTENTIONALLY LEFT BLANK 

MIDWEST GUARDRAIL SYSTEM WITH STANDARD POST SPACING 

SGR20a-c 

SHEET NO. .m9'v:n , 4 of 4 DA TE: 

8/ 1/20 11