KiwiRail has almost completed an investigation into a train driver crashing a red light in an incident that's led to a passenger train service being barred from downtown Auckland due to safety concerns. Waka Kotahi slapped the ban on the Auckland to Hamilton service Te Huia, after different drivers blasted through red lights, two separate times. The most serious failing was a driver ignoring a stop signal near Penrose which the transport agency says could have caused a collision with another passenger train. The other incident was north of Hamilton. Waka Kotahi is now demanding Kiwirail install a specific train safety control system on Te Huia before it's welcomed back into downtown Auckland. Kiwirail chief executive, Peter Reidy, spoke to Lisa Owen. [embed] https://players.brightcove.net/6093072280001/default_default/index.html?videoId=6331035911112