DAFVA11-240 governs U.S. Air Force airport signs, airport markings, runway hold positions, and air traffic control light gun signals.
View DAFVA11-240 on armypubs.army.mil
It identifies runway, taxiway, instrument hold, approach hold, direction, exit, and destination signs. It also presents airport marking meanings and light gun signal actions, and requires tower instructions to be read back verbatim.