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Definitions, as published

The definition of each term exactly as its official source words it, with the article or page it comes from.

1,785 records · page 18 of 36

Term slugDefinition textCitation
environmental-noise Unwanted or harmful outdoor sound created by human activities, including noise emitted by means of transport, road traffic, rail traffic, air traffic and from sites of industrial activity. Glossary for transport statistics, 6th edition (2026), I.III-01.1, p. 157
transport-noise Unwanted or excessive sound produced by transport systems. Glossary for transport statistics, 6th edition (2026), I.III-01.2, p. 157
decibel-db Unit of sound level measurement defined in ISO Standard 80000-3:2006. Glossary for transport statistics, 6th edition (2026), I.III-02, p. 157
a-weighted-decibel-dba Unit of sound level measurement that incorporates a frequency weighting approximating the characteristics of human hearing. Glossary for transport statistics, 6th edition (2026), I.III-03, p. 157
leq-equivalent-continuous-sound-level Method of describing sound levels that vary over time, resulting in a single decibel value that considers the total sound energy over the period of time of interest. Glossary for transport statistics, 6th edition (2026), I.III-04, p. 157
noise-level Physical scale for the description of environmental noise, which has a relationship with a harmful effect, expressed in decibels. Glossary for transport statistics, 6th edition (2026), I.III-05, p. 157
standard-noise-level-indicators ʱ Lden (day-evening-night noise indicator) for overall annoyance; ʱ Lday (day-noise indicator) for annoyance during the day period; ʱ Levening (evening-noise indicator) for annoyance during the evening period; and ʱ Lnight (night-time noise indicator) for sleep disturbance. Glossary for transport statistics, 6th edition (2026), I.III-05.1, p. 157
noise-contours Series of lines superimposed on a map representing equal levels of noise exposure. They show areas in which noise levels exceed a given decibel threshold. Glossary for transport statistics, 6th edition (2026), I.III-06, p. 157
noise-contours-airports As a result of flight traffic, noise impact is either observed or calculated for every point around the airport. Due to a difference in distance from the noise source, these values may vary sharply from one point to another. Noise contours are isolines or lines of equal noise impact, using leq or equivalent measures. These lines connect points where equal noise impact is observed or calculated. ## I.IV. Landscape fragmentation Glossary for transport statistics, 6th edition (2026), I.III-06.1, p. 157
transport-related-soil-pollution Contamination of soil caused by emissions and waste from transport activities. Key sources include: ʱ abrasion of transport components such as brakes, tyres, rail tracks and overhead lines, which release heavy metals; ʱ fuel combustion, which emits persistent organic pollutants (POPs) and other toxic compounds; ʱ oil spills or leaks from fuel handling, distribution or accidents; ʱ deposition of solid or liquid waste, especially along roadways and railways or in port areas. Glossary for transport statistics, 6th edition (2026), I.IV-01, p. 158
transport-related-water-pollution Degradation of water quality due to routine or accidental emissions related to transport activities. Primary sources include: ʱ run-off containing heavy metals and organic pollutants from vehicle emissions and surface abrasion; ʱ discharges of ballast water and waste water from maritime and inland waterway vessels, especially in ports; ʱ use of antifouling agents on ships, releasing metal-organic and toxic substances; ʱ oil spills and accidents, including those from fuel transport and offshore oil extraction (e.g. Deepwater Horizon), which result in large-scale marine pollution. Glossary for transport statistics, 6th edition (2026), I.IV-02, p. 158
multimodal-passenger-transport Use of at least two different modes of transport within a single trip (see J.I-01) or journey (see J.II-01). ## J.I. Short distance mobility (Up to 300 km) Glossary for transport statistics, 6th edition (2026), J.0-01, p. 160
trip Movement of a person from an origin (stay) to a destination (another stay) for a single main purpose (see J.I-08). Glossary for transport statistics, 6th edition (2026), J.I-01, p. 160
stage Movement making use of one single transport mode, including any waiting time directly before or during the movement. Glossary for transport statistics, 6th edition (2026), J.I-02, p. 160
travel-distance-of-a-trip-stage Length of the travelled track between two points. Only distances on public areas, roads, paths, rails, inland waterways, air routes and seaways are included. Glossary for transport statistics, 6th edition (2026), J.I-03, p. 160
travel-time-of-a-stage Time spent from starting to wait for a mode of transport until the time of leaving this mode. Glossary for transport statistics, 6th edition (2026), J.I-04, p. 160
travel-time-of-a-trip Duration from the moment of departure from one activity to the moment of arrival to the next activity. Glossary for transport statistics, 6th edition (2026), J.I-05, p. 161
mode-of-transport-of-a-trip-stage Vehicle or non-vehicle (such as walking) used for travelling, including: ʱ passenger car as driver; ʱ passenger car as passenger (includes using car-sharing services as well as self-driving cars); ʱ taxi (as passenger, including all trips as a paying customer with professional or non-professional driver); ʱ van/lorry/tractor, etc., as passenger or as driver; ʱ motorcycle/moped; ʱ bus/coach; ʱ metro/tram/light rail; ʱ train (split into high-speed train, urban rail and conventional regular/regional train); ʱ aviation; ʱ waterways (including inland waterway and maritime transport covering all types of water-borne vehicles); ʱ cycling (including EPACs (see B.II-09.1)); ʱ walking (including wheelchair, electric or not) and other active mobility such as skateboarding, roller-skating and non-electric kick scooter; ʱ other (including PLEVs (see B.II-10)). Glossary for transport statistics, 6th edition (2026), J.I-06, p. 161
active-mode-of-transport-of-a-trip-stage Any form of human-powered transport, where movement is achieved through physical activity. There may be electric power assistance (see B.II-09.1). Glossary for transport statistics, 6th edition (2026), J.I-06.1, p. 161
main-travel-mode-of-a-trip Travel mode within a trip that has been used for the longest distance. Glossary for transport statistics, 6th edition (2026), J.I-07, p. 161
purpose-of-a-trip Main activity at the destination of a trip, including the following. ʱ Work (commuting). Work/commuting is the purpose for the first of all trips to the workplace at the location of the survey respondent’s employer. Attending a meeting outside the address of the company is a business trip; for employees working at a construction site for a long period, trips directly from home to the construction site are also work/commuting trips. ʱ Business. Trip related to work but not considered as commuting (attending meetings outside the address of the company, etc.). Also referred to as ‘professional trips’. Professional transport-related trips are excluded from reporting if, in the trip, the actual mileage is for professional business. This exclusion applies, for instance, for professional drivers of buses, lorries, vans and trains, as well as deliveries, driving schoolteachers, bus conductors, etc. Trips undertaken as part of public services in action such as the police, firefighters, emergency services, etc., are also excluded from reporting. However, if these professionals use their professional vehicles for non-professional purposes such as commuting or shopping, these trips should be reported. ʱ Education. School or educational institution, school field trips, etc. ʱ Shopping. Shopping for groceries, non-daily shopping, etc. ʱ Escorting. Picking up, accompanying or escorting people; taking children to school; bringing someone to the station, etc. ʱ Leisure. Visiting friends/relatives, going out to eat or drink, touring/walking/cycling, sport/hobby, visiting vacation home, recreation at water/beach/mountains, cultural activities, entertainment, holiday, sightseeing, agritourism, voluntary work, private meetings, other leisure, etc. Loop trips are also included. ʱ Personal business. Services/personal care, health treatment, hairdresser, personal reasons, visit to a lawyer, religious activity, general errands (bank, post office, etc.), delivery or pick-up of things, etc. ʱ Returning home. Trip where the origin is not home, but the destination is home. Home is defined here as the primary residence (the dwelling where the person usually lives), secondary residence, occasional housing, hotel or other residence. ʱ Other. Other purpose. Glossary for transport statistics, 6th edition (2026), J.I-08, p. 161
car-occupancy Number of persons in a passenger car, of all ages from babies to the oldest. Glossary for transport statistics, 6th edition (2026), J.I-09, p. 162
journey Sum of trips away from home and back home again, which may include one overnight stay. Glossary for transport statistics, 6th edition (2026), J.II-01, p. 162
journeys-destination Final location of the outbound trip. Glossary for transport statistics, 6th edition (2026), J.II-02, p. 162
travel-distance-of-a-journey Distance is defined as the length of the travelled track. Glossary for transport statistics, 6th edition (2026), J.II-03, p. 162
travel-time-of-a-journey Time spent travelling from the moment of departure from home to the moment of arrival at home. Glossary for transport statistics, 6th edition (2026), J.II-04, p. 162
duration-of-a-journey-with-overnight-stay Number of nights spent, from leaving home until returning home. Glossary for transport statistics, 6th edition (2026), J.II-05, p. 163
mode-of-transport-of-a-journey Vehicle or non-vehicle (such as walking) used for travelling, including: ʱ passenger car; taxis are also included in this category except when collecting information on stages where a taxi is a typical access or egress mode for air and train travel; ʱ van/lorry/tractor, etc.; ʱ motorcycle/moped; ʱ bus/coach; ʱ train (split into high-speed trains and regular trains including regional trains and urban rail); ʱ aviation; ʱ waterways (including inland waterway and maritime transport covering all types of water-borne vehicles); ʱ cycling, walking, other. Glossary for transport statistics, 6th edition (2026), J.II-06, p. 163
main-travel-mode-of-a-journey Travel mode within a journey that has been used for the longest distance. Glossary for transport statistics, 6th edition (2026), J.II-07, p. 163
travel-purpose-of-a-journey Main reason for a journey. Travel purposes include: ʱ professional/business purpose: business in the course of work, trade, employee business, education as part of a position, commuting to a workplace so far away that a place to stay at the destination is needed; ʱ private purpose: all purposes that are not professional. Glossary for transport statistics, 6th edition (2026), J.II-08, p. 163
accompanying-travellers Persons travelling together with the respondent of the survey. Glossary for transport statistics, 6th edition (2026), J.II-09, p. 163
car-occupancy See J.I-09. ## J.III. Urban area and urban mobility Glossary for transport statistics, 6th edition (2026), J.II-10, p. 163
functional-urban-area-fua Urban area consisting of a city plus its commuting zone. Glossary for transport statistics, 6th edition (2026), J.III-01, p. 163
urban-mobility Trips made by residents of an urban area, where both origin and destination are inside the same urban area. Glossary for transport statistics, 6th edition (2026), J.III-02, p. 163
volume-loaded Goods loaded for international shipment represent exports, while goods discharged from ships represent imports. UNCTADstat, Maritime and other transport, Metadata (World seaborne trade by types of cargo).
volume-discharged Goods loaded for international shipment represent exports, while goods discharged from ships represent imports. UNCTADstat, Maritime and other transport, Metadata (World seaborne trade by types of cargo).
dry-cargo Dry cargo refers to cargo that is usually not carried in tankers, such as dry bulks (e.g., coal, ores, grains), pallets, bags, crates, and containers. UNCTADstat, Maritime and other transport, Metadata (World seaborne trade by types of cargo).
other-tanker-trade “Other” tanker trade refers to tanker trade, excluding crude oil. It includes refined petroleum products, gas and chemicals. UNCTADstat, Maritime and other transport, Metadata (World seaborne trade by types of cargo).
port-container-traffic Port container traffic is measured in twenty-foot equivalent units (TEUs). UNCTADstat, Maritime and other transport, Metadata (Container port throughput).
twenty-foot-equivalent-unit One TEU represents the volume of a standard 20-feet long intermodal container. UNCTADstat, Maritime and other transport, Metadata (Container port throughput).
liner-shipping-connectivity-index Liner shipping connectivity index (LSCI) measures how well a country is connected to global container shipping networks. UNCTADstat, Maritime and other transport, section “Global shipping networks continue to rely on strong regional anchors”.
liner-shipping-connectivity-index The liner shipping connectivity index (LSCI) indicates an economy’s position within global liner shipping networks. It is calculated from the number of ship calls, the container handling capacity of ports, the number of services and companies, the size of the largest ship, and the number of countries connected through direct liner shipping services. UNCTADstat, Maritime and other transport, section “Metadata”.
scheduled-ship-calls-per-week (1) The number of scheduled ship calls per week in the country; UNCTADstat, LSCI metadata, Notes, component (1).
deployed-annual-capacity (2) Deployed annual capacity in Twenty-Foot-equivalent Units (TEU): total deployed capacity offered at the country; UNCTADstat, LSCI metadata, Notes, component (2).
regular-liner-shipping-services (3) The number or regular liner shipping services from and to the country; UNCTADstat, LSCI metadata, Notes, component (3).
liner-shipping-companies (4) The number of liner shipping companies that provide services from and to the country; UNCTADstat, LSCI metadata, Notes, component (4).
largest-ship-deployed (5) The size in TEU (Twenty-Foot-equivalent Units) of the largest ship deployed on services from and to the country; UNCTADstat, LSCI metadata, Notes, component (5).
countries-connected-through-direct-liner-shipping-services (6) The number of other countries that are connected to the country through direct liner shipping services UNCTADstat, LSCI metadata, Notes, component (6).
direct-service a direct service is defined as a regular service between two countries; it may include other stops in between, but the transport of a container does not require transshipment UNCTADstat, LSCI metadata, Notes, note following component (6).
port-liner-shipping-connectivity-index Port Liner Shipping Connectivity Index (PLSCI) which measures connectivity and reflects the level of integration into the global liner shipping network on a port-by-port basis. UNCTADstat, Maritime and other transport, section “Metadata”.

Sources

1,049 further records are on file but not shown, because the publisher's terms do not clearly allow them to be republished.