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FHWA Highway Safety Programs

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.

Letter Date Testing Manufacturer Hardware Type Device Description
LS-15 NCHRP 350 Akron Foundry Luminaire Supports TB-2 Al Transformer base, 12" B.C. TB-1 Al Transformer base, 950# pole.
LS-14 NCHRP 350 Valmont Industries Luminaire Supports Cast Al transformer base No. 0283093 15 inch maximum bolt circle
LS-13 NCHRP 350 P&K Pole Products Luminaire Supports 10" slipbase
LS-11 NCHRP 350 Union Metal Luminaire Supports A2850-C1R10 Al Transformer Base 12.5 inch maximum bolt circle
LS-12 NCHRP 350 P&K Pole Products Luminaire Supports 7" & 8" Al shoe bases, 10" slip base
LS-06A NCHRP 350 Shakespeare Products Luminaire Supports Extrapolate acceptance to higher poles
LS-10 NCHRP 350 Precision Form Luminaire Supports PrecisionForm Coupler PFI 200-1 for poles weighing no more than 800#.
LS-09 NCHRP 350 Akron Foundry Luminaire Supports TB-2 and TB-3 Al Transformer Bases (TB-2 B.C. increased via ls15)
LS-08 NCHRP 350 Transpo Industries Luminaire Supports Pole-Safe breakaway couplings for Conventional luminaire supports weighing no more than 900#.
LS-07 NCHRP 350 Shakespeare Products Luminaire Supports Fiberglass poles, series AA,AB,AC,AD on Transpo Safety 201 or 301couplings. Pole heights of 39' to 47'.