(a) Requirement.--All retail service station dealers shall conspicuously post on each pump from which gasoline containing gasoline additives is dispensed a sign clearly indicating that the gasoline contains gasoline additives, the type or types of gasoline additives contained in the gasoline and the maximum percentage by volume, to the nearest whole percent, of each gasoline additive.

(b) Size of sign.--The information required by subsection (a) shall be conveyed in bold block lettering at least one-quarter inch in size.

(c) Visibility.--If a pump is used to dispense gasoline on more than one driveway, the sign required by subsection (a) shall be placed on both sides of the pump so that a sign shall be clearly visible from each driveway.