Markings must contain glass beads or reflective paint for night operations.
Areas behind an aircraft engine marked to warn personnel of high-velocity exhaust. Apron Markings Signs Handbook
Black lettering on a yellow background. These provide location data, such as gate numbers or terminal directions. Markings must contain glass beads or reflective paint
Characterized by white lettering on a red background. These signify a requirement to stop or an entry into a restricted area, such as a taxiway or runway. such as a taxiway or runway.