Chennai, May 1 -- The Madras high court has made e-passes mandatory for people travelling to Tamil Nadu's two hill stations - Ooty in Nilgiris district and Kodaikanal in Dindigul district - from May 7 to June 30. The decision was taken for data collection to study how much vehicular traffic the ghat roads can take. The verdict was delivered on Monday and the order which was released on Tuesday showed that the court was shocked that 20,000 vehicles enter Nilgiris everyday. "We pass this order more importantly with the important purpose of saving the entire Nilgiris biosphere and for the protection of Western Ghats which is a more serious question," justices D Satish Kumar and D Bharatha Chakravarthy said in their orders. "We must note that...