Sign Support Systems, Designator Nomenclature

S - SystemS - Sign SupportC - Coupling01 - 99a - z
F - Fracturing
M - Mailbox Base
O - Other
P - Splice
S - Slip Base
T - Transformer Base

For example, SSS01a is a System that is a Sign Support with a Slip base.

Sign Supports added in 2021

SSF41a, Telespar Sign Support

Sign Supports added in 2019

SST01a, Crosswalk Pedistal Station

SST01b, Pedestrian Signal Pole