Indian Railway Map by Samit Roychoudhury, the author of the Railway Atlas of India, showing the country’s network with stations & graded according to gauge, single or double lines, electrified routes, etc, with enlargements for the environs of Delhi, Mumbai, Kolkata & Chennai. The main map presents India at 1:5, 000, 000 with states in different colours. The railway network is graded into broad, meter & narrow gauge routes, indicating single or double lines & electrified sections. Also marked are dedicated freight lines. Stations are graded according to their status: zonal or divisional headquarters, junctions, etc. Symbols indicate locations of electric & diesel loco sheds. Also marked are international border crossings & the map shows the railway network in the eastern part of Pakistan (without grading). Enlargements present the environs of Delhi, Kolkata, Mumbai & Chennai in greater detail. Another inset shown a map of India with railway transit times, e.g. Delhi to Thiruvananthapuram in 42 hours.