When are addition field markings permitted on the field?

Addition field markings are permitted on the field as long as they do not obscure the required lines. This means that any extra markings that are added must be placed in a way that they still allow the essential lines for the game, such as the center circle, penalty area, and touchlines, to be clearly visible and easily distinguishable. This rule ensures that the integrity of the playing field is maintained and that players, officials, and spectators can easily identify all necessary markings for the game.

Other options suggest scenarios where additional markings might be allowed either unconditionally or in restricted areas, but they do not address the primary concern of visibility and clarity that governs how and when extra markings may be added. As such, the correct understanding focuses on the condition that additional markings must never obscure existing essential lines on the field.