Emission factor from JRC-IDEES v2023-1.00
Passenger rail, metro and tram - real-world
Hungary · Combustion · 2023 onwards
Value per passenger carried one kilometre
0.00611kgCO₂e/p.km
Fossil only · CO₂ only
- LoadHow full a lorry, train or ship runs with goods. A passenger factor counts passengers or vehicles, not tonnes, so no load applies.
- Not applicable
- Vehicle sizeThe vehicle's class, by weight or capacity. JRC-IDEES does not say which size this factor assumes.
- Not stated
- Distance bandFlights are priced by distance band, because take-off and climb burn a large share of a short flight's fuel. Road, rail and sea factors apply to a trip of any length.
- Any distance, not banded
- Cabin classA business seat takes more of the cabin than an economy one, so it carries more of the trip's emissions. JRC-IDEES does not say which class this factor assumes.
- Not stated
- Region
- Hungary HU
- Boundary
- Combustion
- Data quality
- MediumRated by us, not by the source
- Licence
- Open · CC BY 4.0
Where 0.00611 comes from
JRC-IDEES prints this factor as a single figure, with no parts to add up.
Reporting this passenger-kilometre under the GHG Protocol
Scope 3, category 6 0.00611
A trip for work is business travel, Scope 3, category 6, whoever books it.
The factor, standardised
Every factor on open-climate.ai answers the same questions in the same words, whatever the publisher. Open any ⓘ for the definition.
Transport › Rail travel · Hungary · per p.km · Average
Combustion · Fossil only
- BoundaryCombustionDirect emissions from burning the fuel at the point of use, in a boiler, furnace, engine or vehicle (for a vehicle, tank-to-wheel). Learn more
- Combustion
- Fuel combustion
- GWP methodWhich IPCC assessment report's warming potentials convert each gas to CO₂e, and over how many years the warming is counted (GWP100: 100 years). Learn more
- None: the value counts CO₂ alone
- CO₂ weighs 1 in every IPCC report, so no GWP applies
- CO₂e basisWhich carbon the CO₂e counts. Fossil only leaves out biogenic CO₂ and land use; net total counts every pool, net of removals. The same activity on two bases is two different numbers. Learn more
- Fossil only
- All of it is CO₂
Medium quality · Open licence · 2000 to now
All values
24 values, one per year back to 2000. Every one is fossil only, so the years compare directly.
2023 onwards0.00611Default value
- Default: what search and the API return when you ask for nothing specific
What this number covers
The path of one passenger-kilometre, from the oil well to the end of the trip.
Train operation
The energy the train uses, diesel or electric, spread over the average load
Included0.00611Your trip
1 passenger carried 1 km. The factor is per passenger-kilometre.
= 0.00611
Outside this boundary
- Upstream fuel (well-to-tank)
- Building the train
- Tracks and stations
This factor counts the fuel the vehicle burns, not the vehicle itself or the infrastructure it runs on. Some libraries price building the vehicle as a factor of its own.
Gases in train operation
Basis: Fossil onlyFossil carbon only: biogenic CO₂, methane from biogenic sources and land-use change are left out. Learn more
- Fossil CO₂0.00611
The CO₂e counts fossil carbon only; biogenic CO₂, biogenic methane and land-use carbon are left out.
From JRC-IDEES's record to a comparable factor
JRC-IDEES publishes this factor as one record. Here is each field as printed and what open-climate.ai made of it.
About this factor
JRC-IDEES gives no description for this factor. Filed under Transport › Rail, metro and tram › Passenger transport.
Source and licence
- Publisher
- European Commission, Joint Research Centre (JRC-IDEES)
- Library
- JRC-IDEES v2023-1.00
- Record
- EMIint.gCO2_per_pkm.HU.Tr.Rail.Passenger
- Published
- 6 November 2025
The values and their metadata are served in full and may be reused with credit to the publisher.
Cite this factor
© European Union, 1995-2026. JRC-IDEES-2023 (Integrated Database of the European Energy System), European Commission, Joint Research Centre, v2023-1.00. CC BY 4.0. Normalised by open-climate.ai, https://open-climate.ai/factors/libraries/jrc_idees/ (CC BY 4.0). https://open-climate.ai/factors/ef-jrcidees-passenger_rail_metro_and-hu-pkm-combustion-df6d2572/?v=efv1-14e1e64c0d1400c6dc3e6a47d8f8da2d
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