If a white marking is outside the prescribed lines, it may still be acceptable if it can be completely covered by a disk of what diameter?

• A. 1/2 inch
• B. 1 inch
• C. 2 inches
• D. 3 inches

Answer: (B)

The test is about tolerance for small white markings that fall outside the prescribed marking lines. The rule allows such a marking to be acceptable only if it can be completely covered by a disk with a diameter of one inch. This creates a clear, objective standard: place a one-inch circle over the mark, and if the entire marking sits inside that circle, it’s within tolerance; if any part sticks out, it’s not. Among the options, the one-inch disk is the official threshold. Smaller disks would be stricter than the standard, and larger disks would let bigger markings pass than allowed. So the correct diameter is one inch.