September 27, 2012 Runway incursion prevention is possible using combination of procedures and technology already in use or available off the shelf. Incursion problems have in common lack of situation awareness on the part of one or more of the participants. This common thread is communication failure. The solutions are communication solutions. Problems: single transmit frequencies allowed blocked transmissions. Solution: separate transmit frequencies use repeaters for ground control use multiple input freq all listen to repeater output use digital voice mode each transmitter identifies with unique digital code all double transmission are recognized and resolved by delayed read back or repeat request Problem pilots are lost: Solution location technology already in use hold point traffic signals wheel/throttle locks enabled by runway transponder runway occupied warning Problem controllers do not know where the planes are Solution location technology already in use hold point traffic signals naval carrier flight boss/ launch officer command duality in IMC wheel/throttle locks enabled by transponder runway occupied warning All of these things have already been thought of. Many of them are in use other situations. What I find it useful is to mention them all together. None of these solutions require great expense or cumbersome organization. Off the shelf technology could put any of the plans into effect by a team of techno geeks in 72 hrs using stuff from Radio Shack.