I think this is really just a case of flying into the ground. It just happened to be in close proximity to other aircraft. There are lots of systems that are

I think this is really just a case of flying into the ground. It just happened to be in close proximity to other aircraft. There are lots of systems that are available to avoid that (ILS, GPS etc.) which were not used in this instance. And a system for avoiding collisions for taxing aircraft is probably not much use at such high speeds. Some airports do have a system [0] designed to track taxing aircraft and allow collision risks to be detected. https://en.wikipedia.org/wiki/ASDE-X https://en.wikipedia.org/wiki/ASDE-X