Transport emissions: what the national total leaves out

Emissions attributable to France, outside the national total

Under UNFCCC rules, only emissions from journeys between two ports or airports located in France enter the national total. International journeys are measured, published, attributed to France, but reported outside the total. They are plotted here alongside the transport sector, never added to it: their sum would match no inventory.

Émissions imputables à la France mais exclues du total national par les règles de l'UNFCCC. À lire à côté du total national, jamais additionnées à lui.

Road vehicles, by category and by fuel

Road transport accounts for most of the Transport sector's emissions. The workbook breaks it down by vehicle category and by fuel, for three gases: all gases combined, CO₂ alone, and HFCs. Switching between the three on the same vehicles measures what air conditioning adds to the exhaust pipe.

The fuel breakdown is the one published under “All vehicles”, where the workbook merges LPG and NGV. It therefore does not line up row for row with the category breakdown, which keeps them apart.

Émissions des véhicules routiers par catégorie et par carburant, sur le périmètre « Kyoto ». Trois gaz : GES tous gaz confondus, CO2 seul, et HFC (fluides frigorigènes de climatisation). Le périmètre de la ligne « Poids lourds » diffère d'un tableau à l'autre : il est indiqué par `poidsLourdsIncluentBus`, vérifié par l'arithmétique et non seulement lu dans le libellé.

Scope and caveats

• "Kyoto" scope: mainland France + EU overseas territories. Broader than the Passenger transport page, which reads sheet D2.1.1 (mainland France only). The two totals are not comparable term by term.
• INTERNATIONAL inland waterway, maritime and air transport is attributable to France but reported outside the national total, under UNFCCC rules: only emissions from journeys between two ports or airports located in France enter the total. They are published separately here, never added to the total.
• All greenhouse gases combined, in CO₂ equivalent: CO₂, CH₄, N₂O, HFC, PFC, NF₃, SF₆. The workbook also publishes each gas separately: the sections below cover CO₂ alone and HFCs, to show what CO₂ leaves out.
• The three “road vehicles” tables (-i, -J, .K) publish the same category × fuel breakdown for three gases. The scope of the “Heavy goods vehicles” row (buses and coaches included or not) is established by arithmetic rather than by the label: the build sums the categories both possible ways and keeps, for each table, the one that reconstitutes “All vehicles” across ALL published years. A verdict that varied from year to year fails the build; a stable verdict that contradicts the label is kept, and the discrepancy is published below.
• The two “(%)” rows of the workbook contain fractions (0.338 rather than 33.8). They are converted into percentage points, then checked against the ratio recomputed from their two published operands.
• Emissions broken down by passenger transport mode, and carbon intensity per passenger-kilometre, are on the Domestic passenger transport page.

License: Licence Ouverte / Etalab 2.0.

Real data, updated with each annual edition of the Bilan annuel des transports. Chapter D is shared with the transport-voyageurs and traction-energie modules: a single download feeds them all.