1200 New Jersey Avenue, SE 

Washington, D.C. 20590

January 27, 2010 

In Reply Refer To: 

HSSD/B-97A 

Mr. Leo Yodock 

President 

The Yodock Wall Company 

P.O. Box 354 

Bloomsburg, PA 17815 

Dear Mr. Yodock: 

 

In your letter of August 4, 2009, you requested the Federal Highway Administration (FHWA) 

acceptance of your modified barrier, the 2001M or Metropolitan, for use as a crashworthy barrier 

in work zones on the National Highway System (NHS). The modified 2001M is now made of 

blow molded high-density polyethylene. The FHWA Acceptance Letter B-97 was issued for the 

original 2001M for use with the Yodock Barrier Wall Kit as a redirectional barrier. 

The Yodock Metropolitan is a portable energy disbursement cell, used for traffic channelization. 

When installed as a longitudinal Barrier Wall the units must be accessorized with the Yodock 

Barrier Wall Kit. When installed as a longitudinal Channelizer the units can be interlocked end 

to end and coupled together. The Metropolitan is manufactured with High Density Polyethylene. 

The units can be joined together by a unique coupling device that aids in the prevention of 

separation of the individual units. The Metropolitan has a functional length of 72 inches, it is 18 

inches wide at the base, and 32 inches tall. It has a nominal empty weight of 80 lbs and a water 

ballasted weight of approximately 900 lbs. 

Accompanying your letter were the FHWA Office of Safety Design forms, a drawing of the 

modified 2001M, and a copy of a test report that documented static testing conducted on your 

modified device to verify connection strength between units linked together and to compare the 

results to the previously accepted 2001M device. The results of testing indicated that the 

connection strength did not exceed that of the original 2001M. 

You have requested that we find this device acceptable as meeting NCHRP Report 350 Test 

Level 2 criteria for use on the NHS. 
2

This letter is to acknowledge the FHWA’s acceptance of the modified device and your request. 

Conditions in FHWA Acceptance Letter B-97 continue to apply. The original completed forms, 

drawing, and test report are appended to our recent Acceptance Letter WZ-127#1 which accepts 

the modified 20001M units for use in longitudinal channelizing devices. 

Sincerely yours, 

David A. Nicol, P.E 

 Director, Office of Safety Design 

 Office of Safety 

Enclosures 

FHWA:HSSD:NArtimovich:tb:x61331:1/11/10 

File: s://directoryfolder/nartimovich/B97A_WZ127#1YodockMetropolitanBARRIER_10710.doc 

cc: HSSD (Reader, HSA; Chron File, HSSD; N.Artimovich, HSSD; DNicol, HSSD) 
1200 New Jersey Avenue, SE 

Washington, D.C. 20590

January 27, 2010 

In Reply Refer To: 

HSSD/B-97A 

Mr. Leo Yodock 

President 

The Yodock Wall Company 

P.O. Box 354 

Bloomsburg, PA 17815 

Dear Mr. Yodock: 

 

In your letter of August 4, 2009, you requested the Federal Highway Administration (FHWA) 

acceptance of your modified barrier, the 2001M or Metropolitan, for use as a crashworthy barrier 

in work zones on the National Highway System (NHS). The modified 2001M is now made of 

blow molded high-density polyethylene. The FHWA Acceptance Letter B-97 was issued for the 

original 2001M for use with the Yodock Barrier Wall Kit as a redirectional barrier. 

The Yodock Metropolitan is a portable energy disbursement cell, used for traffic channelization. 

When installed as a longitudinal Barrier Wall the units must be accessorized with the Yodock 

Barrier Wall Kit. When installed as a longitudinal Channelizer the units can be interlocked end 

to end and coupled together. The Metropolitan is manufactured with High Density Polyethylene. 

The units can be joined together by a unique coupling device that aids in the prevention of 

separation of the individual units. The Metropolitan has a functional length of 72 inches, it is 18 

inches wide at the base, and 32 inches tall. It has a nominal empty weight of 80 lbs and a water 

ballasted weight of approximately 900 lbs. 

Accompanying your letter were the FHWA Office of Safety Design forms, a drawing of the 

modified 2001M, and a copy of a test report that documented static testing conducted on your 

modified device to verify connection strength between units linked together and to compare the 

results to the previously accepted 2001M device. The results of testing indicated that the 

connection strength did not exceed that of the original 2001M. 

You have requested that we find this device acceptable as meeting NCHRP Report 350 Test 

Level 2 criteria for use on the NHS. 
2

This letter is to acknowledge the FHWA’s acceptance of the modified device and your request. 

Conditions in FHWA Acceptance Letter B-97 continue to apply. The original completed forms, 

drawing, and test report are appended to our recent Acceptance Letter WZ-127#1 which accepts 

the modified 20001M units for use in longitudinal channelizing devices. 

Sincerely yours, 

David A. Nicol, P.E 

 Director, Office of Safety Design 

 Office of Safety 

Enclosures 

FHWA:HSSD:NArtimovich:tb:x61331:1/11/10 

File: s://directoryfolder/nartimovich/B97A_WZ127#1YodockMetropolitanBARRIER_10710.doc 

cc: HSSD (Reader, HSA; Chron File, HSSD; N.Artimovich, HSSD; DNicol, HSSD)