Performance Criteria:
Double-Neck™ Pole-Safe® conforms to AASHTO "Standard Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals."

Double-Neck™ Pole-Safe® has been vehicle crash-tested and FHWA approved in accordance with the requirements of NCHRP Report 350, "Recommended Procedures for the Safety Performance Evaluation of Highway Features."

Physical Properties per Coupling:
Ultimate Tensile Strength:
131.0 kN (29.4 kips), minimum

Tensile Yield Strength:
113.6 kN (25.5 kips), minimum

Ultimate Restrained Shear Strength:
8.9 kN (2.0 kips), maximum

Corrosion Protection:
All Double-Neck™ Pole-Safe® couplings, nuts, bolts, washers and shims are H.D. galvanized after fabrication in accordance with ASTM A153.