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            In This Section
  

  Roadway Departure Safety
                Strategic Approach
                Keep Vehicles on the Road
                Provide for a Safe Recovery
                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
																								DateSort descending
																								Testing
																								Manufacturer
																								Hardware Type
																								Device DescriptionLS-12
																																				May 14, 1990
																																				NCHRP 350
																																				P&K Pole Products
																																				Luminaire Supports
																																				7" & 8" Al shoe bases, 10" slip baseLS-11
																																				May 15, 1990
																																				NCHRP 350
																																				Union Metal
																																				Luminaire Supports
																																				A2850-C1R10 Al Transformer Base 12.5 inch maximum bolt circleLS-13
																																				May 29, 1990
																																				NCHRP 350
																																				P&K Pole Products
																																				Luminaire Supports
																																				10" slipbaseLS-15
																																				May 30, 1990
																																				NCHRP 350
																																				Akron Foundry
																																				Luminaire Supports
																																				TB-2 Al Transformer base, 12" B.C. TB-1 Al Transformer base, 950# pole.LS-14
																																				May 30, 1990
																																				NCHRP 350
																																				Valmont Industries
																																				Luminaire Supports
																																				Cast Al transformer base No. 0283093 15 inch maximum bolt circleCC-14
																																				June 4, 1990
																																				NCHRP 350
																																				Syro Steel Co.
																																				Barrier Terminals and Crash Cushions
																																				CAT crash cushion attenuating terminal (Operational)SS-18
																																				June 19, 1990
																																				NCHRP 350
																																				Minute Man Breakaway
																																				Sign Supports, Mailboxes, and Delineator Posts
																																				MMB-1HD breakaway device for use with two 3 #/ft flanged channel "U" posts in strong soil. (see SS-21 for weak soil acceptance letter)LS-16
																																				June 29, 1990
																																				NCHRP 350
																																				Valmont Industries
																																				Luminaire Supports
																																				Slip Base specificationsSS-19
																																				July 31, 1990
																																				NCHRP 350
																																				Allied Tube and Conduit
																																				Sign Supports, Mailboxes, and Delineator Posts
																																				Square-Fit signpost systems.LS-19
																																				August 6, 1990
																																				NCHRP 350
																																				Akron Foundry
																																				Luminaire Supports
																																				TB-3-17, TB-5-9, TB-6-9 Transformer Bases, 11.5 to 15.5" BC
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