NH 47 is currently undergoing conversion from two lane to four lane, with some sections being converted to six lane. The stretch between Coimbatore and Trivandrum via Kochi is one of the busiest among the Indian highways, with most of the traffic in this stretch comprising of trucks carrying consumer goods, construction material, container lorries and passenger vehicles. A large number of industries and textile parks are located on the highway between Coimbatore, Erode and Tiruppur districts. This highway is often referred as the lifeline for the industries in the region.