MSKT Guardrail End Terminal – MASH Sequential Kinking Terminal
The MASH Sequential Kinking Terminal (MSKT) is an energy-absorbing guardrail end treatment designed to dissipate the energy from head-on crashes. Engineered for MASH TL-3 compliance, the MSKT redirects vehicles to reduce the severity of impact while maintaining the integrity of the connected guardrail system.
Our highway road safety barriers are strong, long-lasting and easy to install. And when you partner with Gregory Highway—a leading highway guardrail and roadside safety supplier—you will always get a quick turnaround and responsive service.
How the MSKT Guardrail Terminal Works
During head-on impacts, the MSKT guardrail terminal head slides over the W-Beam guardrail, sequentially kinking it. The kinked rail exits the head, and the vehicle comes to a controlled stop using the same effective technology seen in NCHRP 350 SKT field performance. When impacted along the side within the length of need, the MSKT functions like a highway guardrail system, containing and safely redirecting vehicles.
The MSKT features a guardrail impact head that can be used on existing sequential kinking terminal (SKT) systems for maintenance repairs. This interchangeability allows you to save on inventory costs. Only minimal components need to be inventoried for continual maintenance purposes and new MASH guardrail installations.
MSKT Guardrail End Terminal Features
- MASH TL-2 and TL-3 compliant
- Utilizes the same field-proven sequential kinking technology used in the NCHRP 350 SKT
- Energy-absorbing tangent terminal uses proven sequential kinking technology
- Improved impact head and anchorage system
- Length of need point at post 3 is 12’6” downstream
- Easy installation; familiar for work crews
- The same footprint as NCHRP 350 SKT
- Enhances highway safety
MSKT Performance
The MSKT offers sequential kinking technology in a MASH-tested guardrail end treatment to safely slow vehicles on impact while complying with modern safety standards. As the vehicle strikes the impact head, the W-beam is progressively kinked, absorbing crash energy for safe deceleration.
SKT has a long history of field-tested performance proven by decades of crash-test data. The MSKT builds on that experience, creating a MASH-compliant update with proven performance. The MSKT tangent terminal maintains the same footprint as the NCHRP 350 SKT, enabling compatibility with existing NCHRP 350 installations for repair or replacement.
Product Specifications
- 50 ft. long with 8 posts spaced at 6’3” centers
- Use with rail heights of 30 to 32 inches
- 25:1 optional flare rate
- 8” or 12” blocks
AASHTO Specifications
Our guardrail is manufactured to AASHTO specifications in M180 Class A or B, and finish types 1, 2, 3, or 4. Every piece of Gregory Highway guardrail is stamped with a brand registration that is repeated throughout the entire length of the rail.
Gregory Stamping Code:
- Manufacturer: GH=Gregory highway
- AASHTO Specifications
- Mill Heat Number Code
- Galvanized Lot
- 01 = Week (1st week)
- 23 = Year (2023)
- Class
- Class A = 12 gauge 0.105in (2.67mm)
- Class B = 10 gauge 0.135in (3.43mm)
- Type
- Type 1 = Zinc coated 1.8 oz/sq. ft. (550 g/sq. m.) minimum single spot
- Type 2 = Zinc coated 3.6 oz/sq. ft. (1,100 g/sq. m.) minimum single spot
- Type 3 = Uncoated Steel
- Type 4 = Weathering Steel
Frequently Asked Questions
What is an MSKT guardrail terminal?
An MSKT guardrail terminal, or MASH Sequential Kinking Terminal, is an energy absorbing tangent terminal designed to dissipate energy during head-on collisions.
Is the MSKT MASH compliant?
Yes. The MSKT guardrail end treatment is designed to meet MASH TL-2 and TL-3 crash-testing requirements.
Where are guardrail end terminals used?
Guardrail end terminals are installed where open ends of highway guardrail are exposed to traffic, including at the beginning of highway guardrail systems, near bridge approaches and in medians.
Can MSKT replace older SKT systems?
Yes. The MSKT impact head covers the same footprint as NCHRP 350 SKT systems, making it compatible with existing systems and allowing agencies to reduce inventory.
PARTNER WITH GREGORY HIGHWAY
When you need complete solutions that are strong, long-lasting, and easy to install, you need to partner with Gregory Highway. As the national leader in highway guardrails and roadside safety, you can rely on us for quick turnarounds, competitive pricing, and responsive service. And we’re proud to say our steel guardrail and highway products are manufactured in the heart of the U.S. Contact us today to get started on your next highway safety project.