Beyond what minimum distance from the outer edge of the front or rear marker light must a load project in width for its marking with warning boards or flags to be mandatory in accordance with the Road Traffic Rules?

• 1By 0.2 m.
• 2By 0.3 m.
• 3By 0.4 m.
• 4By 0.5 m.
• 5By 0.6 m.