Several important State highways (SH), including the busy Bangalore-Mysore and Kodagu-Mangalore routes, will soon become National Highways (NH), if the State Government has its way.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/state-highways-may-soon-become-national-highways
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/deccan-herald-bangalore
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bangalore-d
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mysore-d
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/highways
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ministry-shipping-road-transport-and-highways
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/roads
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/habitat-and-urbanisation