WASHINGTON (AP) — The National Transportation Safety Board wants to see ground collision warning systems on all large commercial airliners.

The board recommended Wednesday that the Federal Aviation Administration require large airplanes to be equipped with collision avoidance tools, such as an on-board externally-mounted camera system that would give the pilot a clear view of the plane’s wingtips. This comes after several mishaps at U.S. airports involving planes colliding with one another while taxiing.