- Airports: Total number of airports. Runways must be useable, but may be unpaved. May not have facilities for refuelling, maintenance, or air traffic control.
- Airports > With paved runways > Total: Total number of airports with paved runways (concrete or asphalt surfaces)
- Gross value added by transport, storage and communication: Gross Value Added by Kind of Economic Activity at current prices - US dollars.
- Gross value added by transport, storage and communication per capita: Gross Value Added by Kind of Economic Activity at current prices - US dollars. Figures expressed per capita for the same year.
- Heliports: Total number of established helicopter take-off and landing sites (which may or may not have fuel or other services).
- Ports and terminals: This entry lists major ports and terminals primarily on the basis of the amount of cargo tonnage shipped through the facilities on an annual basis. In some instances, the number of containers handled or ship visits were also considered.
- Quality of port infrastructure, WEF > 1=extremely underdeveloped to 7=well developed and efficient by international standards: Quality of port infrastructure, WEF (1=extremely underdeveloped to 7=well developed and efficient by international standards). The Quality of Port Infrastructure measures business executives' perception of their country's port facilities. Data are from the World Economic Forum's Executive Opinion Survey, conducted for 30 years in collaboration with 150 partner institutes. The 2009 round included more than 13,000 respondents from 133 countries. Sampling follows a dual stratification based on company size and the sector of activity. Data are collected online or through in-person interviews. Responses are aggregated using sector-weighted averaging. The data for the latest year are combined with the data for the previous year to create a two-year moving average. Scores range from 1 (port infrastructure considered extremely underdeveloped) to 7 (port infrastructure considered efficient by international standards). Respondents in landlocked countries were asked how accessible are port facilities (1 = extremely inaccessible; 7 = extremely accessible).
- Rail > Railway length: Railway length in kilometers.
Road > Motor vehicles per 1000 people:
Motor vehicles per 1000 people.
No date was available from the Wikipedia article, so we used the date of retrieval.
- Road network length > Km: Length of road network in kilometers in European Union countries.
- Roads > Motor vehicles > Per 1,000 people: Motor vehicles (per 1,000 people). Motor vehicles include cars, buses, and freight vehicles but do not include two-wheelers. Population refers to midyear population in the year for which data are available.
- Roads > Passenger cars > Per 1,000 people: Passenger cars (per 1,000 people). Passenger cars refer to road motor vehicles, other than two-wheelers, intended for the carriage of passengers and designed to seat no more than nine people (including the driver).
- Roads > Roads, total network > Km: Roads, total network (km). Total road network includes motorways, highways, and main or national roads, secondary or regional roads, and all other roads in a country. A motorway is a road designed and built for motor traffic that separates the traffic flowing in opposite directions.
- Roadways > Paved: This entry is derived from Transport > Roadways, which gives the total length of the road network and includes the length of the paved and unpaved portions.
- Roadways > Unpaved: This entry gives the total length of the road network and includes the length of the paved and unpaved portions.
SOURCES: CIA World Factbooks 18 December 2003 to 28 March 2011; United Nations Statistics Division; United Nations Statistics 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.; World Economic Forum, Global Competiveness Report.; Wikipedia: List of countries by rail transport network size (Long List); Wikipedia: List of countries by vehicles per capita; International Road Federation, World Road Statistics and data files.; International Road Federation, World Road Statistics and electronic files, except where noted.; CIA World Factbooks 2010, 2011, 2012, 2013
"Montenegro Transport Stats", NationMaster. Retrieved from http://www.nationmaster.com/country-info/profiles/Montenegro/Transport
"Montenegro Transport Stats, NationMaster." 1990-2014. <http://www.nationmaster.com/country-info/profiles/Montenegro/Transport>.
'Montenegro Transport Stats, NationMaster', <http://www.nationmaster.com/country-info/profiles/Montenegro/Transport> [assessed 1990-2014]
"Montenegro Transport Stats", NationMaster [Internet]. 1990-2014. Avaliable from: <http://www.nationmaster.com/country-info/profiles/Montenegro/Transport>.
"Montenegro Transport Stats", NationMaster. Avaliable at: nationmaster.com. Assessed 1990-2014.
"Montenegro Transport Stats, NationMaster," http://www.nationmaster.com/country-info/profiles/Montenegro/Transport (assessed 1990-2014)
"Montenegro Transport Stats", NationMaster, http://www.nationmaster.com/country-info/profiles/Montenegro/Transport (last visited 1990-2014)
"Montenegro Transport Stats", NationMaster, http://www.nationmaster.com/country-info/profiles/Montenegro/Transport (as of 1990-2014)