OPSD 985.110 - Small Sign Support System Single Breakaway Wooden Post 89 x 89 mm, 89 x 140 mm, 140 x 140 mm, and 140 x 184 mm Installation - Single Post Assembly
OPSD 985.210 - Small Sign Support System Double Breakaway Wooden Post 89 x 89 mm, 89 x 140 mm, Installation - Double Post Assembly
OPSS.MUNI 703 - Permanent Small Signs and Support Systems
OPSS.PROV 703 - Permanent Small Signs and Support Systems
Other Standards
NCHRP 350 TL-3 - Recommended Procedures for the Safety Performance Evaluation for Support Structures, Work Zone Traffic Control Devices and Breakaway Utility Poles