Recently the Federal Highway Administration decided that it takes way too much time for us to read road signs printed in ALL CAPITAL LETTERS. So, the newest FHA Manual of Uniform Traffic Control Devices says that all such signs must be replaced by those with an initial capital letter, followed by the remaining letters in lower case.
According to a September article in the New York Post, New York City has already begun the process of changing its 250,900 signs. City officials estimate it at $110 each, that amounts to $27.6 million, just for New York City. Maybe it is a secret 'shovel ready' project to keep prisoners busy.