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QuadGuard® II

The QuadGuard® II is a redirective, non-gating crash cushion that consists of an engineered steel nose and crushable, energy absorbing cartridges surrounded by a framework of steel Quad-Beam™ panels. The system is tested to NCHRP Report 350 Test Level 2 and Test Level 3. The Test Level 2 model is 25% shorter than the original QuadGuard® measuring less than 10’ (3 m). The Test Level 3 model is nearly 3’ (.9 m) shorter in length than its predecessor. The QuadGuard® II can be used to shield fixed objects 24” to 126” wide (610 mm to 3.2 m) while using less than 19’ in length (22’ for the 126”).

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Features

  • Self-supporting steel nose, custom cut-out available.
  • Monorail guide shims to stabilize the diaphragms.
  • Footprint is 25% less for TL-2 and 3’ less for TL-3 than the original QuadGuard®.
  • High strength Quad-Beam™ panels.
  • Does not use anchoring chains or tension cables.
  • Compact, modular design tested to speeds from 25 mph (40 km/h) to 62 mph (100 km/h).

 

The QuadGuard® II, as a member of the QuadGuard® family of crash cushions, consists of many of the same components as the QuadGuard.

Assembly & Maintenance

  • Damaged cartridges are replaceable.
  • Monorail base does not use anchoring chains or tension cables.
  • Anchorage options include asphalt, concrete, and soil-drive pile.
  • Potentially reusable after an impact within NCHRP Report 350 crash test standards.*

 

Back-Up Structure and Attachments

  • Simplified backups – Tension strut or concrete
  • Bridge pier(s) and parapet(s)
  • Square block(s)
  • Temporary and permanent concrete barrier(s)
  • Thrie-beam
  • W-beam

 

*After an impact, the product must be inspected and evaluated per the direction of the specifying roadway authority. The ultimate decision on reusability rests with the specifying roadway authority and/or state DOT.

 

Specifications

Test Level 2 Two-Bay Unit

(Available in widths of 24″, 30″, 36″ & 48”)

  • 9’ 11” Long (3.03 m)
  • 24” (610 mm) Min. Width and 48” (1.22 m) Max. Width at Backup Structure
  • 24” Wide Unit: 1,210 lbs. (549 kg)

Test Level 2 Three-Bay Unit

(Available in widths of 69″ & 90”)

  • 69” & 90” Wide Units are 13’ Long (3.96 m)
  • Max. Width for Three-Bay is 90” (2.29 m)

 

Test Level 3 Five-Bay Unit

(Available in widths of 24″, 30″, 36″, 48”, 69” & 90”)

  • 19’ Long (5.8 m)
  • 24” (610 mm) Min. Width at Backup Structure
  • 24” Wide Unit: 2,455 lbs. (1,114 kg)

Test Level 3 Six-Bay Unit

(Available in width of 126”)

  • 22’ Long (6.73 m)
  • 126” (3.2 m) Max. Width at Backup Structure

Product Images

Product Documents

PI Sheet

QuadGuard® II

Manuals

QuadGuard® II Assembly Manual
QuadGuard® II Product Description Manual