It took very long time to reconstruct the MUTCD code database. Please see Construct the traffic sign database. However, we now have much more complete set of codes with very valuable contexts of each sign like its shape, colors, and even text marked in the traffic sign. I just finished the code database user interface implementation. To see the progress of the MUTCD Traffic Sign coder and what I am doing or struggle to solve, please see MUTCD Traffic Sign Coder.
To start the manual sign tagging, I still need to do several more things as specified in the To-do list in the above page. It can't be done today and I am sorry for this. But I will try to make it happen this week. Again, please read MUTCD Traffic Sign Coder and send me any opinion if available.