NCHRP350 Approved

NCHRP350 Approved

The following is the list of NCHRP Report 350 Work Zone Approval Letters issued to Three D Traffic Works by the FHWA.

MODEL          WZ-#

TD2100        WZ-33/-33A/-33B

TD2150        WZ-198

TD2200        WZ-54

TD2250        WZ-54

TD2300        WZ-54

TD2400        WZ-217

TD2500        WZ-54/-85

TD2550        WZ-54/-85

TD2600        WZ-82/-85/-128

TD2650        WZ-85/-128

TD3000        SELF-CERTIFIED

TD4000        WZ-128

TD4300        WZ-54

TD5000        SELF-CERTIFIED

TD5100        SELF-CERTIFIED

TD5200        SELF-CERTIFIED

TD5275        WZ-253

TD6000        WZ-118

TD6500        WZ-271

TD7000        SELF-CERTIFIED

TD7500        WZ-271

TD8400        SELF-CERTIFIED

TD8450        SELF-CERTIFIED