Equipment restraint lines are which color?

• A. White lines.
• B. Green lines.
• C. Blue lines.
• D. Red lines.

Answer: (D)

On the ramp, color-coded markings convey safety boundaries. Equipment restraint lines use red to mark the boundary where equipment must be restrained and kept from moving beyond. The red line stands out as a warning boundary, signaling that you should not cross it when equipment is being prepared or operated, to protect workers and prevent collisions or interference with active gear.

So, red lines indicate the equipment restraint area, and you should stay clear of crossing them unless you’ve coordinated and received clearance to do so. White, green, and blue lines serve other functions (safety perimeters, pedestrian walkways, and service lanes, respectively), but the red boundary is specifically about restraining and safeguarding equipment operations.