The NMR track is made of 50 lb rails. There are 250 bridges on the section, out of which 32 are major ones and 15 are road over bridges. The Maximum permissible speed on Mettupalaiyam-Kallar and Coonoor-Udagamandalam 'Non-Rack' section is 30 kmph while between Kallar and Coonoor 'Rack' section the maximum permissible speed is 13 kmph.