Every tank motor vehicle used for the transportation of flammable liquids shall have the word "FLAMMABLE" displayed in English on both sides and rear of the tank in letters not less than five inches high by at least a one-inch stroke, and on the front bumper in letters not less than four inches high by at least a one-inch stroke, each on a background of sharply contrasting color, except that the lettering on vehicles used exclusively for local distribution need not exceed five inches in height by at least a three-fourths inch stroke.
(Prior code § 129.1-98)