Transport > Railways Stats: compare key data on Bulgaria & Romania
Definitions
 Goods transported > Million tonkm: Goods transported by railway are the volume of goods transported by railway, measured in metric tons times kilometers traveled."
 Narrow gauge: This entry states the total route length of the railway network and of its component parts by gauge: broad, dual, narrow, standard, and other.
 Passengers carried > Million passengerkm: Passengers carried by railway are the number of passengers transported by rail times kilometers traveled.
 Rail lines > Total routekm: Rail lines (total routekm). Rail lines are the length of railway route available for train service, irrespective of the number of parallel tracks.
 Rail lines > Total routekm per million: Rail lines (total routekm). Rail lines are the length of railway route available for train service, irrespective of the number of parallel tracks. Figures expressed per million population for the same year.
 Railways, goods transported > Million tonkm: Railways, goods transported (million tonkm). Goods transported by railway are the volume of goods transported by railway, measured in metric tons times kilometers traveled.
 Railways, goods transported > Million tonkm per 1000: Railways, goods transported (million tonkm). Goods transported by railway are the volume of goods transported by railway, measured in metric tons times kilometers traveled. Figures expressed per thousand population for the same year.
 Railways, passengers carried > Million passengerkm: Railways, passengers carried (million passengerkm). Passengers carried by railway are the number of passengers transported by rail times kilometers traveled.
 Railways, passengers carried > Million passengerkm per million: Railways, passengers carried (million passengerkm). Passengers carried by railway are the number of passengers transported by rail times kilometers traveled. Figures expressed per million population for the same year.

Standard gauge:
This entry states the total route length of the railway network and of its component parts by gauge: broad, dual, narrow, standard, and other.
Standard gauge=1.435m gauge 
Standard gauge per million:
This entry states the total route length of the railway network and of its component parts by gauge: broad, dual, narrow, standard, and other.
Standard gauge=1.435m gauge. Figures expressed per million population for the same year.  Total: This entry states the total route length of the railway network and of its component parts by gauge: broad, dual, narrow, standard, and other.
 Total > Per $ GDP: This entry states the total route length of the railway network and of its component parts by gauge: broad, dual, narrow, standard, and other. Per $ GDP figures expressed per 1 billion $ gross domestic product.
 Total > Per capita: This entry states the total route length of the railway network and of its component parts by gauge: broad, dual, narrow, standard, and other. Per capita figures expressed per 1,000 population.
 Total per million: This entry states the total route length of the railway network and of its component parts by gauge: broad, dual, narrow, standard, and other. Figures expressed per million population for the same year.

Standard gauge > Per $ GDP:
This entry states the total route length of the railway network and of its component parts by gauge: broad, dual, narrow, standard, and other.
Standard gauge=1.435m gauge Per $ GDP figures expressed per 1 billion $ gross domestic product.
SOURCES: World Bank, Transportation, Water, and Urban Development Department, Transport Division.; CIA World Factbooks 18 December 2003 to 28 March 2011; World Bank, Transportation, Water, and Information and Communications Technologies Department, Transport Division.; World Bank, Transportation, Water, and Information and Communications Technologies Department, Transport Division. Population figures from World Bank: (1) United Nations Population Division. World Population Prospects, (2) United Nations Statistical Division. Population and Vital Statistics Report (various years), (3) Census reports and other statistical publications from national statistical offices, (4) Eurostat: Demographic Statistics, (5) Secretariat of the Pacific Community: Statistics and Demography Programme, and (6) U.S. Census Bureau: International Database.; CIA World Factbooks 18 December 2003 to 28 March 2011. Population figures from World Bank: (1) United Nations Population Division. World Population Prospects, (2) United Nations Statistical Division. Population and Vital Statistics Report (various years), (3) Census reports and other statistical publications from national statistical offices, (4) Eurostat: Demographic Statistics, (5) Secretariat of the Pacific Community: Statistics and Demography Programme, and (6) U.S. Census Bureau: International Database.