| Class | Function | Type | Number | Test Level |
|---|---|---|---|---|
| S – System | B – Bridge Railing | A – Aluminum | 01 – 99 | a – TL-1 |
| B – Steel Tube (Box) | b – TL-2 | |||
| C – Concrete | c – TL-3 | |||
| D – Wood | d – TL-4 | |||
| M – Other Material | e – TL-5 | |||
| O – Other Steel | f – TL-6 | |||
| T – Thrie-Beam | ||||
| W – W-Beam |
Bridge Railing Nomenclature
Designator Nomenclature