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  Roadway Departure Safety
                Strategic Approach
                Keep Vehicles on the Road
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                Reduce Crash Severity
                Focus on Reducing Rural Roadway Departures (FoRRRwD)
                
                Archived Hardware Eligibility Letters – NCHRP 350
These letters are archived and are posted for "historical and research purposes only" per the sunset dates in the AASHTO/FHWA Joint Implementation Agreement and exceptions to these dates as posted on the AASHTO Committee on Design website.SearchHardware Type
                    
- Any -Barrier Terminals and Crash CushionsLongitudinal Barriers and Bridge RailsLuminaire SupportsSign Supports, Mailboxes, and Delineator PostsWork Zone DevicesStart DateEnd Date
    Letter
																								Date
																								Testing
																								ManufacturerSort descending
																								Hardware Type
																								Device DescriptionSS-134C
																																				February 6, 2013
																																				NCHRP 350
																																				Xcessories Squared
																																				Sign Supports, Mailboxes, and Delineator Posts
																																				Xcessories Squared Redi-Torque Triangular Slip BaseWZ-51
																																				September 8, 2000
																																				NCHRP 350
																																				Xcessories Squared
																																				Work Zone Devices
																																				Type III Barricades and Sign StandsSS-134B
																																				March 30, 2012
																																				NCHRP 350
																																				Xcessories Squared
																																				Sign Supports, Mailboxes, and Delineator Posts
																																				Xcessories Squared Redi-Torque Triangular Slip Base
Xcessories Squared Redi-Torque Triangular Slip Base Top (10 3/8”) with galvanized keeper plate
Top (10 3/8”) with galvanized keeper plateSS-134A
																																				April 9, 2007
																																				NCHRP 350
																																				Xcessories Squared
																																				Sign Supports, Mailboxes, and Delineator Posts
																																				Addendum that modifies the slip base receiverSS-134
																																				May 9, 2006
																																				NCHRP 350
																																				Xcessories Squared
																																				Sign Supports, Mailboxes, and Delineator Posts
																																				"Redi-Torque" Model 280 Hardware KitSS-68H
																																				December 26, 2001
																																				NCHRP 350
																																				Xcessories Squared
																																				Sign Supports, Mailboxes, and Delineator Posts
																																				Modification to 8-inch 3-bolt slip bases – Revised concrete footer for weak soilSS-131A
																																				May 15, 2012
																																				NCHRP 350
																																				Xcessories Squared
																																				Sign Supports, Mailboxes, and Delineator Posts
																																				Keen Break CouplerSS-68G
																																				December 26, 2001
																																				NCHRP 350
																																				Xcessories Squared
																																				Sign Supports, Mailboxes, and Delineator Posts
																																				Modification to 10-inch 3-bolt slip bases – Three within a 7 foot spanSS-52A
																																				October 22, 1997
																																				NCHRP 350
																																				Xcessories Squared
																																				Sign Supports, Mailboxes, and Delineator Posts
																																				Reference letters to Unistrut and Allied Highway SalesSS-131
																																				December 2, 2005
																																				NCHRP 350
																																				Xcessories Squared
																																				Sign Supports, Mailboxes, and Delineator Posts
																																				PSST Coupling
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