Median Attenuating TREND Terminal (MATT)

Description: MATT™(“Median Attenuating TREND® Terminal”) is a tangent, double-sided, redirective/gating, energyabsorbing terminal for unidirectional or bidirectional applications, to include roadside, shoulder, median, and gore applications. It is also suitable for use as either an approach or departure terminal. MATT™ was tested to MASH-2nd Edition (2016), with 2020 Errata to Test Level 3 (“TL-3”) criteria. MATT™ can be connected directly to 8” [203 mm] blocked Midwest Guardrail System (“MGS”). No radiused or curved W-Beam guardrail is allowed within the System. MATT™ has a system length of 34’ 4-1/2” [10.48 m], which is measured from the center of Post 1 to the splice location directly behind Post 6. The impact head extends forward of the center of Post 1 by 2’ [610 mm], for an effective length of 36’ 4-1/2” [11.09 m]. The System utilizes an impact head, angle strut, tension cable, one (1) Controlled Release Post (“CRP”), four (4) Steel Yielding Terminal Posts (“SYTP”) and one (1) standard line post and various other fastener and hardware components. All system posts utilize below-grade soil plates for increased soil bearing resistance. Additionally, the System includes six (6) SETS of Proprietary W-Beam 10/12ga guardrail panels, of which three (3) SETS have an integrated shaper fin and three (3) SETS do not. Posts 1-5 uses 8" [203 mm] deep steel spacers (Double at Post 1-2,Singles at Posts 3-5) while Post 6 utilizes 8” [203 mm] deep guardrail composite block-out (s). System installation height, as tested, was 31” [787 mm] with a tolerance of +1” [25 mm], -0” and a width of 29” [737 mm]. Adhesive-backed delineation was attached to the impact head.

Test Level: 3

Eligibility Letter: CC-175

MASH Test Number: 3-30, 3-31, 3-32, 3-33, 3-34, 3-35, 3-37

Proprietary/Non-proprietary: Proprietary

Pass/Fail: Pass

Evaluation: Full-Scale Crash Testing

Sponsor: Trinity Highway Products