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Welcome to the web site of the Traffic Control Devices (TCD) Committee!


TCD is a technical standing committee AHB50 of the Transportation Research Board (TRB) of the National Academies. TCD is concerned with the development, design, application, and evaluation of traffic control devices, and their effect on traffic operation and safety. Additional committee information can be found at the following link:

Additional Information


The Traffic Control Devices Committee members are listed on the Member Information page. Anyone interested in Traffic Control Devices Committee is welcome to become a Friend of the Committee. You can sign up on the Membership page.


Committee communication takes place primarily through our E-mail list (Listserv). Please sign up to join the list if you haven't yet done so. Members and Friends who have already signed up and do not receive email from the list, please notify the Webmaster.


We look forward to your participation and involvement with this committee.




David A. Noyce, Chair


Department of Civil and Environmental Engineering

University of Wisconsin-Madison