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Sign, Signal, and Luminaire Supports, Utility Poles, Trees, and Similar Roadside Features. RDG Chapter 4. Roadside Appurtenances. Sign and Luminaire Supports Traffic Signal Supports Mailbox Supports Utility Poles Trees. crash. Stub Height Criteria. Stub. 4” max. 5’ min. Sign Supports.
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Sign, Signal, and Luminaire Supports, Utility Poles, Trees, and Similar Roadside Features RDG Chapter 4
Roadside Appurtenances • Sign and Luminaire Supports • Traffic Signal Supports • Mailbox Supports • Utility Poles • Trees
Stub Height Criteria Stub 4” max. 5’ min.
Types of Sign Supports • Overhead Signs • Large Roadside Signs • Small Roadside Signs
Wind Vehicle Impact Weak in Shear Ground-Mounted Breakaway Signs Strong in Moment
Car diagram 7’
Small Sign Supports • Base Bending • Slip Base • Fracture
1 4 Breakaway Hinge Point on Slopes Safer Roads Roadway 7’ 20’
Types of Breakaway Luminaire Supports • Transformer Bases • Slip Bases • Frangible Couplings • Fiberglass Poles