The new technology developed by Delaware-based B&W Tek uses laser light to produce a high-quality, controlled, bright yellow beam which projects a high-visibility line across the taxiway marking
the 'hold short' line.
As part of its continuing investigation, NTSB will review the runway and taxiway markings
. Board Member Deborah Hersman told reporters that CVR tapes were "consistent with normal operations" and that "air traffic control and the flight crew planned for a takeoff from Runway 22." It was the only runway mentioned in conversations between cockpit and tower, she noted.
It cited a number of non-working runway and taxiway lights, problems with taxiway markings
, runway guard lights and stop bars.