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    NCHRP350 Approved
    NCHRP350 Approved
    Three D Traffic Works Striving for Excellence in Traffic Safety and Compliance

    "NCHRP 350 Approved" refers to roadside safety hardware that has been successfully crash-tested according to the guidelines outlined in the National Cooperative Highway Research Program (NCHRP) Report 350, "Recommended Procedures for the Safety Performance Evaluation of Highway Features."

         Downloadable Reports

    The following is the list of NCHRP Report 350 Work Zone Approval Letters issued to Three D Traffic Works by the FHWA.
    TD2100 - Type I & II Works Barricade – All Plastic
    TD2150 Type I & II Econocade Barricade – All Plastic
    TD2250 Type I & II Works Barricade – Extruded Plastic/Steel
    TD2400 Type III Work Barricade - All Plastic
    TD2500 Type III Works Barricade Plywood/Angled Steel
    TD2550 Type III Works Barricade – Plywood/Tubular Steel
    TD2600 Type III Works Barricade – Plastic/Angle Steel
    TD2650 Type III Works Barricade – Plastic/Tubular Steel
    TD4000 Works Plastic Type III Barricade Rails
    TD6000 VIP Vertical Indicator Panel