Truckers ignore traffic advisories, claim ignorance.
“Barry Brecto, a Federal Highway Administration bridge engineer based in Olympia, said he found it ‘hard to believe’ that truck drivers didn’t know the height of their loads.

“‘Drivers are licensed and subject to drug tests and regular inspections. I don’t know why some truck drivers are not obtaining proper permits for their loads and following the law,’ he said. ”

On an unrelated note, from the book Colonial American English: Words and Phrases Found in Colonial Writing, Now Archaic, Obscure, Obsolete, or Whose Meanings Have Changed:
“hippocras (n.) A wine with cloves, ginger, cinnamon, and nutmeg added. From latin vinum Hippocraticum ‘wine of Hippocrates,’ as it was filtered through a flannel hippocrates bag.”

Unfortunately, hippocrates bag is not defined. But Brewer’s Dictionary of Phrase and Fable comes to the rescue:
“Hippocrates’ sleeve. A woolen bag of a square piece of flannel, having the opposite corners joined, so as to make it triangular. It was used by apothecaries for straining syrups, decoctions and the like and formerly by vintners.”