land_emissions: Calculate CO2e emissions from land-travel journeys

In carbonr: Calculate Carbon-Equivalent Emissions

Calculate CO2e emissions from land-travel journeys

Description

A function that calculates CO2e emissions on a journey on land.

Usage

land_emissions(
  distance,
  units = c("miles", "km"),
  num = 1,
  vehicle = c("Cars", "Motorbike", "Taxis", "Bus", "National rail", "International rail",
    "Light rail and tram", "London Underground", "Coach"),
  fuel = c("Petrol", "Diesel", "Unknown", "Battery Electric Vehicle",
    "Plug-in Hybrid Electric Vehicle"),
  car_type = c("Average car", "Small car", "Medium car", "Large car", "Mini",
    "Supermini", "Lower medium", "Upper medium", "Executive", "Luxury", "Sports",
    "Dual purpose 4X4", "MPV"),
  bike_type = c("Average", "Small", "Medium", "Large"),
  bus_type = c("Local bus (not London)", "Local London bus", "Average local bus"),
  taxi_type = c("Regular taxi", "Black cab"),
  TD = TRUE,
  include_WTT = TRUE,
  include_electricity = TRUE,
  owned_by_org = TRUE
)

Arguments

distance	Distance in km or miles of the journey made (this can be calculated with other tools, such as google maps.).
units	Units for the distance travelled. Options are "km" or "miles".
num	Number of passengers if vehicle is one of coach, tram, or tube. Otherwise, number of vehicles used.
vehicle	Vehicle used for the journey. Options are "Cars", "Motorbike", "Taxis", "Bus", "National rail", ⁠"International rail⁠, "Coach", "Light rail and tram", "London Underground". Note: car, taxi, motorbike is per vehicle.
fuel	Fuel type used for the journey. For car, "Petrol", "Diesel", "Unknown", "Battery Electric Vehicle", "Plug-in Hybrid Electric Vehicle" are options. ##' "hybrid electric" and "battery electric" account for electricity kWh emissions.
car_type	Size/type of vehicle for car. Options are ⁠c("Average car", "Small car", "Medium car", "Large car",⁠ ⁠"Mini", "Supermini", "Lower medium", "Upper medium", "Executive",⁠ ⁠"Luxury", "Sports", "Dual purpose 4X4", "MPV"),⁠. Small denotes up to a 1.4L engine, unless diesel which is up to 1.7L engine. Medium denotes 1.4-2.0L for petrol cars, 1.7-2.0L for diesel cars. Large denotes 2.0L+ engine.
bike_type	Size of vehicle for motorbike. Options are "Small", "Medium", "Large", or "Average". Sizes denote upto 125cc, 125cc-500cc, 500cc+ respectively.
bus_type	Options are "local_nL", "local_L", "local", or "average". These denote whether the bus is local but outside of London, local in London, local, or average.
taxi_type	Whether a taxi is regular or black cab. Options are "Regular taxi", "Black cab".
TD	logical.Whether to account for transmission and distribution (TD) for electric vehicles (only car and van)
include_WTT	logical. Well-to-tank (include_WTT) - whether to account for emissions associated with extraction, refining and transportation of the fuels (for non-electric vehicles).
include_electricity	logical. Whether to account for ... for electric vehicles (car and van).
owned_by_org	logical. Whether the vehicle used is owned by the organisation or not (only for car, motorbike).

Value

Tonnes of CO2e emissions per mile travelled.

Examples

# Emissions for a 100 mile car journey
land_emissions(distance = 100)

# Emissions for a 100 mile motorbike journey where the motorbike is 500+cc
land_emissions(distance = 100, vehicle = "Motorbike", bike_type = "Large")

carbonr documentation built on Sept. 11, 2025, 9:11 a.m.