Yes, this is about as absurd as banning photographs of bridges in the city, when you can go to a public library and look at books with detailed plans showing the structure of most of the bridges in the city, not to mention thousands of photographs of them.

Maybe I should go out now and get all my photographs of the subway system during the 45 day comment period so that I can sell them to the terrorists for high prices, if a ban is put in place.

Terrorists are probably going to start posting on photo.net asking what kind of film they should use for photographing in the subway, and specialists in architectural photography will recommend that they leave it to a professional.