¶ Transitions
Transitions are the crash tested devices that link two types of barrier.
¶ Devices
There are a number of proprietary and public domain transition devices:
- Alaska MASH 2-Tube Bridge Rail Transition
- BG800 to HighwayGuard LDS Transition
- ETI USA Thrie-Beam to ETI Roller Barrier Transition
- Glulam Bridge Rail Transition
- HV2 Barrier Transition to Crash Cushion
- Metal Transition for Branching Concrete Barrier
- MGS W-Beam to Thrie-Beam Transition
- Midwest Guardrail System (MGS) to PCB Transition
- Modified Hawaii Thrie-Beam Approach Guardrail Transition
- Nested MGS W-Beam to Thrie-Beam Transition with Curb
- QuickChange Moveable Barrier Concrete Reactive-Tension System
- Safety Roller Barrier Transition to W-Beam Guardrail
- SafeZone to SLED Transition
- Three Cable Low-Tension Transition to BCT End Terminal
- Thrie-Beam Transition to NJ-Shape Concrete Barrier
- Transition from MGS to Thrie-Beam Approach Guardrail
The sources of the specific device names are documented here.
¶ Condition Assesment
Several agencies have created detailed guardrail repair standards and assesment criteria, notably:
- FHWA - 2008-fhwa_wbeam_repair.pdf
- NCHRP - 2014_w-beam_damage_assesment_guide.pdf