This compliance will allow planes to land at low altitude even when there is poor visibility. The Air India pilots probably might have lifted off at the last minute to avoid a possibility to reject take-off. "These requests show that we need more space to have comfortable operations on the runway at a time when more planes have to be accommodated," said an official. The metro rail line veers into the airport for a few metres before it comes up and veers back over GST Road between Nanganallur Road station and Meenambakkam. EMAS will include bollard kinds of materials or crushable concrete platform which can arrest the speed of a plane when it runs out of a runway..